Daytime Running Light Circuit Board

Circuit board from DRL module in 2005 Nissan Altima

This easy fix could save you hundreds of dollars. Do not be intimidated by complicated appearance of this task. Read on!

If the daytime running lights (also known as “DRL”) in your Honda/Acura or Nissan/Infinti vehicle are not working, have a good look at this article before taking your vehicle to the dealer or replacing the running light module. In all likelihood, there is fast and inexpensive solution to this issue that could save you a lot of money.

We noticed that the daytime running lights on our 2005 Nissan Altima were out and also only one headlight was working in high-beam mode. We initially assumed that a burned out bulb was causing the problem. But a quick internet search pointed to a faulty daytime running light module. Apparently the driver’s-side high-beam goes out when the DRL module malfunctions.

We also discovered that a small solder job on the module circuit board could easily repair the problem. We are certainly not experts in electronics or circuit board repair, but as a new module apparently sells for over $250 at the dealership, we were game to give it a try.

For our Altima, this forum thread at (post # 30) provided the exact location of the unit under the dash and the exact spots on the circuit board that generally require solder touch-up. We (carefully!) doctored up the spots shown in the image of the thread, as well as a few others that appeared discolored. We reinstalled the module and voila! We had daytime running lights and fully functioning high-beams. Thank-you internet! We didn’t even have to remove any dash panels to complete this task.

It is vital that you do your research before jumping into this job, as DRL module locations can vary. You do not want to be soldering the innards of the wrong module box! For helpful dis-assembly and soldering tips, do check out the two videos below.

Honda DRL Module Repairs

It seems as though daytime running light repairs on Honda vehicles are very common and thankfully there is a load of guidance out there. Even if you do not own a Honda, check out these two videos as they are very helpful. The fellow performing the repair on the CRV is especially adept with a soldering iron.

Honda CRV Daytime Running Light Repair Video

Honda Civic, Accord, Prelude Daytime Running Light Repair Video

A reader asks: I’ve been running this batch of oil in my motorcycle since the beginning of summer. Should I change the oil before I store the bike for the winter or wait until spring and change it then so that I’m starting out with fresh oil?

Answer: We would definitely suggest that you change your motorcycle’s oil just prior to storage, rather than wait until next spring. The reason being is that the oil that is currently in your motorcycle’s engine and transmission has been absorbing contaminants such as combustion by-products, wear metals, dirt, clutch plate residue and even moisture over the course of the summer. Nothing good can come from leaving this oil in your bike for long-term storage. A fresh oil change would flush out all of these contaminants and the new oil’s anti-corrosion attributes will be at full capacity. Next spring this oil will be more than suitable to use for the normal service interval. So give your bike a good run just before you intend to park it for the winter and drop the old oil.

We would be remiss not to mention that we sell a motorcycle oil series that possesses a marine-grade additive package to fight rust and corrosion in engines, transmissions and primary chaincases. AMSOIL Advanced Synthetic Motorcycle Oils are offered in 20W-50, 10W-40, 10W-30 and SAE 60. These oils deliver friction reduction, unwavering transmission protection and cooler operation. So you can enjoy a performance upgrade from these oils all summer and have peace of mind knowing that your bike’s engine and transmission internals are protected from corrosion all winter long.


AMSOIL Synthetic 5W-40 API CJ-4 Diesel Oil

AMSOIL Synthetic 5W-40 Diesel Oil now meets the Ford WSS-M2C171E motor oil specification.

AMSOIL Premium Diesel Synthetic 5W-40 Engine Oil  now carries the Ford WSS-M2C171E diesel oil specification. This spec signifies that a motor oil is suitable for Ford’s PowerStroke 7.3, 6.0 and 6.4 litre engines.

Your guess is as good as ours as to what factors are required to reach this specification. Many automakers offer up their own ambiguous motor oil specs, but for domestic vehicles, the API specifications are predominantly recognized. In the case of AMSOIL Synthetic Diesel 5w-40, it is API CJ-4 licensed and that’s all that most modern diesel owners truly watch for.

This AMSOIL Diesel 5W-40 is applicable for year-round use in the vast majority of diesel applications. It offers a -51°F cold pour point for winter use and low volatility for summer use. It also provides potent wear protection and improved fuel economy. Contact us using the form on your right for a wholesale synthetic oil price list.


AMSOIL Signature Series 100% Synthetic 0W-20 Motor Oil

This suite of synthetic oil products provide dependable cold weather operation.

Many motorists are drawn to synthetic oil for the first time because of its exceptional ability to flow easily in cold weather. In fact, that was the main reason we first sought out synthetic oil. Ultimately this led us into the business of marketing AMSOIL products. So were it not for our frustrations with conventional oil in winter, we would be in another line of work.

Of course the benefits of synthetic oil go far beyond cold weather proficiency. One could even argue that synthetic oil’s potent staying power is even more beneficial in extreme heat. But today let’s talk about winter and cold pour point numbers in particular.

The “cold pour point” is determined using the ASTM “D97” test method and the process is pretty much as you might imagine. An oil is cooled down to the point where it no longer flows like a liquid. If you are interested in buying AMSOIL Synthetic oil for your car or truck this winter (smart choice!), here are the cold pour point numbers for each of their main synthetic lubricants for cars and trucks.

Note that this number is only one of many factors to consider when choosing an oil. These synthetic oils provide scores of benefits beyond cold weather flow, but when the mercury plummets to -35° this winter, it is the only trait that matters.

Engine Oils

Gasoline/Passenger Car/Light Truck Motor Oil

Signature Series

This is AMSOIL’s flagship synthetic engine oil line. Signature Series offers the most advanced motor oil technology on the market for maximum performance, protection and oil change duration.

  • 0W-20 -53°C (-63°F)
  • 5W-20 -53°C (-63°F)
  • 0W-30 -51°C (-60°F)
  • 5W-30 -51°C (-60°F)
  • 10W-30 -48°C (-51°F)

XL Series

XL offers moderate extended service capabilities and along with a great value in the synthetic motor oil arena.

  • 0W-20 -48°C (-54°F)
  • 5W-20 -43°C (-45°F)
  • 5W-30 -43°C (-45°F)
  • 10W-30 -40°C (-40°F)
  • 10W-40 -38°C (-36°F)

OE Series

OE is a synthetic series designed for OEM drain intervals with very good performance and protection capabilities at an entry-level price.

  • 0W-20 -48°C (-54°F)
  • 5W-20 -43°C (-45°F)
  • 5W-30 -43°C (-45°F)
  • 10W-30 -40°C (-40°F)

Premium Protection Series

This series is designed for older vehicles and motor homes needing a heavier viscosity and top-notch protection.

  • 10W-40 -44°C (-47°F)
  • 20W-50 -36°C (-33°F)

Z-Rod Series

A motor oil specifically designed for classic cars and street rods. Brings protective capabilities specific to older cars along with long-term storage corrosion protection.

  • 10W-30 -45°C (-49°F)
  • 20W-50 -39°C (-38°F)

Dominator Racing Engine Oils

Racing-only synthetic motor oils in a variety of viscosity options.

  • 5W-20 -50°C (-58°F)
  • 10W-30 -45°C (-49°F)
  • 15W-50 -36°C (-33°F)
  • SAE 60 -36°C (-33°F)

European Motor Oils

Covers virtually every European auto specification on the market. For gasoline or diesel engines.

  • Low-SAPS 5W-30 -44°C (-47°F)
  • Mid-SAPS 5W-40 -40°C (-40°F)
  • Full-SAPS 5W-40 -39°C (-38°F)

Diesel Engine Oils

API CJ-4 Diesel Engine Oils (meets latest specifications). The “Premium” diesel oils are AMSOIL’s top offering for all model-year diesel engines. The OE Diesel Oils are AMSOIL lower-priced synthetic line for diesel engines.

  • DEO Premium 5W-40 -46°C (-51°F)
  • DME Premium 15W-40 -40°C (-40°F)
  • OE Diesel 15W-40 -38°C (-36°F)
  • OE Diesel 10W-30 -38°C (-36°F)

API CI 4+ Diesel Engine Oils (a specification for pre-2007 diesel trucks)

  • HDD Series 3000 5W-30 -50°C (-58°F)
  • AME Heavy Duty Diesel & Marine 15W-40 -42°C (-44°F)
  • ACD 10W-30/SAE 30 -36°C (-33°F)

Natural Gas Engine Oils

  • 20W-40 for Stationary Engines -40°C (-40°F)
  • 15W-40 for Vehicles -39°C (-38°F)

Transmission Oils

Automatic Transmission Fluid

Signature Series is AMSOIL’s top shelf ATF. OE ATF’s are a synthetic auto transmission fluid series that sell at a value price.

  • Signature Series Multi-Vehicle ATF -53°C (-63°F)
  • Signature Series Fuel Efficient ATF -53°C (-63°F)
  • OE Series Multi-Vehicle ATF -46°C (-51°F)
  • OE Series Fuel Efficient ATF -48°C (-55°F)

CVT Transmission Oil

  • Synthetic CVT Fluid -45°C (-49°F)

Manual Transmission Oil

  • MTF Synchomesh Transmission Fluid -46°C (-51°F)
  • MTG Manual Transmission/Transaxle -54°C (-65°F)

Gear Oil

Severe Gear Series

This AMSOIL’s foremost gear lube series for differentials, transfer cases and the like.

  • 75W-90 -48°C (-54°F)
  • 75W-110 -46°C (-51°F)
  • 75W-140 -46°C (-51°F)

Bigger and smaller oil filtersMany are frequently perplexed as to why some modern cars and trucks are equipped with such tiny oil filters. A reader voices his concern and asks if he can use a bigger oil filter.

A reader asks: “My car uses a very small oil filter. Are there any reasons as to why I can’t use a longer filter? Are there are any disadvantages?”

Answer: This is a very common question and one we ask ourselves from time to time. One looks at the tiny “teacup” oil filters on many of today’s V-6 and even V-8 engines and wonders what the engine designers were thinking.

We posed this question to a few of the big-name oil filter makers and the general consensus is that today’s engines run far cleaner than the engines of yesteryear and that capacity is not a concern. Unless there is a malfunction, very little dirt gets into these engines, so the OEM-sized oil filters actually offer a considerable amount of over-capacity.

So if many consumers are concerned about the puny oil filters on their vehicles, why doesn’t the aftermarket provide larger filters (even if it’s just for optics)? There are three reasons as to why the aftermarket is not providing “larger than OEM” oil filters.

1. The first are space concerns. Many oil filters are cramped into tight spots that are difficult to access as it is.

2. The second is clearance. Longer oil filters can be vulnerable to damage from rocks and road debris. If the aftermarket oil filter is about the same size as the factory unit, the filter producer is not opening themselves up to damage claims as they might if they offered longer oil filters that are susceptible to this type of mishap.

3. The third reason why the aftermarket is not providing longer oil filters is that they also don’t consider the filter sizes offered by the car-makers to be too small or short on capacity. They see it as an non-issue.

Reasons Why You Shouldn’t Use a Longer Oil Filter

Many people have used larger oil filters with no problem, but there are some downsides to consider:

1. Relief/by-pass pressure settings

When searching for a larger oil filter, many will consider filter characteristics like thread size, filter diameter and gasket diameter. If all of those match up on a longer filter, they think they can simply use the longer filter and have now got one over on the man. Not so fast…

A major factor in an oil filter’s compatibility is the by-pass pressure valve setting. An oil filter’s by-pass pressure valve is an internal mechanism that opens up if the oil pressure becomes too high. This pressure-relief valve opens either during cold starts when the oil is thick or in the event that the filter is plugged with debris. When this valve is open, unfiltered oil is allowed to by-pass the filter rather than channel it through the filter media. This prevents the oil filter from malfunctioning due to excess oil pressure and also maintains the flow of oil to the engine.

When researching for this post, we searched out a few forum threads to get a feel for types of oil filters that posters were using to replace the recommended units. Often times they were posting specific part numbers, so we could do a search to see if their dimensions and by-pass valve settings were correct. Most were in the ballpark, but one post was not. A Subaru owner was using a filter that was 1.2” longer than the filter recommended for his engine. The rub was that the recommended filter had a bypass valve pressure setting of 23 PSI, while the longer filter had a setting of only 8 to 11 PSI. In other words, while this poster was looking for more oil filter capacity, his longer oil filter (with a low by-pass setting) could potentially be in by-pass mode on a regular basis.

This is an extreme case, but it illustrates how choosing a larger oil filter goes beyond the consideration of only dimensions.

2. Warranty Risks

Virtually every oil filter sold is warranted by the manufacturer. If you have an engine failure caused by an oil filter defect, your repair costs will be covered by the filter company. If you opt to use an oil filter part number that is not recommended for your application, you have given the filter company an out and they will not cover you in the event of a claim. A larger oil filter might give you the “warm and fuzzies”, but more than likely, the extra capacity is completely redundant anyway. Consider if the extra oil filter capacity is worth the risk of operating without warranty coverage (should the unthinkable happen).

When You Should Consider a Larger Capacity Oil Filter

Situations where a larger oil filter should be considered is in engines that have been extensively modified for racing or very high performance. When high volume oil pumps have been installed, a specialized racing oil filter should also be used. These types of oil filters allow for much higher volumes of engine oil circulation. This type of racing oil filter does not apply to normal passenger car/light truck applications.

How to Gain Capacity with Your Regular-Sized Oil Filter

A way to gain oil filter capacity with an OEM-sized oil filter is to use a model equipped with a synthetic media. Synthetic oil filter media materials are able to hold more contaminants, while still allowing for exceptional flow at the end of the oil change interval. Conventional cellulose (paper) oil filters only hold contaminants on top of the media. Think about how coffee grounds are held on the inside of a coffee maker filter. When the cellulose media is covered, the filter’s flow is restricted. These high-tech synthetic filter materials have very tiny openings that actually hold contaminants in the media itself as well as on the outside of the media. This added dimension of viable filtering area means that synthetic oil filters can offer double the contaminant holding capacity over regular oil filters.

How to Gain A Lot More Oil Filter Capacity

If you want to gain more oil capacity, filtering capacity and achieve finer particle removal, consider adding an oil by-pass filter system. Regular full-flow oil filters remove particles in the 15 to 25 micron range. By-pass oil filters are capable of removing contaminants in the 1 to 2 micron range. By-pass filter systems use a much denser filter media and draws the oil through at a very slow rate for exceptionally thorough filtration. These systems work in conjunction with a full-flow oil filter. This type of system is able to extend oil life quite dramatically. The major drawback of this type of oil filter system is that they many modern cars simply do not have space to accommodate these units. For that reason they tend to be more popular on trucks.

Today’s motor oil market is more diverse than ever, so we thought it would be a good exercise to put together some numbers for you. Let’s look at the top selling AMSOIL motor oils at and then let’s chart which engine oil viscosities are the most popular this year from our complete product line.

Here are the top 15 most popular AMSOIL motor oils at

  1. XL 5W-30 Synthetic Motor Oil
  2. Premium Synthetic Diesel Oil 5W-40
  3. XL 5W-20 Synthetic Motor Oil
  4. Signature Series 5W-30 Synthetic Motor Oil
  5. European Car Formula 5W-40 Mid-SAPS
  6. Synthetic Heavy Duty Diesel & Marine 15W-40
  7. Signature Series 5W-20 Synthetic Motor Oil
  8. Premium Synthetic Diesel Oil 15W-40
  9. OE 5W-30 Synthetic Motor Oil
  10. European Car Formula 5W-30 Low-SAPS
  11. Signature Series 0W-20 Synthetic Motor Oil
  12. OE 5W-20 Synthetic Motor Oil
  13. Signature Series 0W-30 Synthetic Motor Oil
  14. OE Synthetic Diesel Oil 15W-40
  15. European Car Formula 5W-40 Full-SAPS

Which Motor Oil Viscosity is Most Popular?

As for the current popularity of each motor oil viscosity, we chose to do so in three categories:

  • Passenger car/light truck/gasoline engine
  • Diesel engine
  • European motor oils

Again these numbers are based on our sales and not necessarily a reflection of the overall industry.

Engine Oil For Passenger Car/Light Truck/Gasoline Engine

In the chart below, you’ll note that 5W-30 motor oil still reigns supreme with a 46.16% share, but when you combine 5W-20 and 0W-20, they capture 43.33% of our sales. So the 20 weight oils are nipping at the heels of 5W-30 and we fully expect that within 2 years, 5W-30 will be in second place and falling. In an effort to optimize gas mileage, automakers are moving to lighter oils like 5W-20 and 0W-20 at a rapid pace. In fact, don’t be shocked to see a 0W-16 on the market in the foreseeable future.

Motor Oil Sales Chart for Gasoline Cars and Trucks

Diesel Engine Oil

In the diesel engine oil category, with a 48.73% market share, 5W-40 garners the most sales on the strength of AMSOIL “DEO” 5W-40 Premium Synthetic. These strong sales are based on two main factors. First, it is suitable for the latest diesel engines requiring an oil with the API CJ-4 spec and is also compatible with diesel engines requiring previous diesel specifications. Secondly, the wide 5W-40 viscosity range allows for excellent winter and summer performance, making it ideal for year-round use. The sales for 15W-40 remain very strong, although we suspect that many diesel owners could benefit from using the 5W-40 year-round rather than using 15W-40 at all.

Diesel Engine Oil Sales Chart By Viscosity

European Car Motor Oil

As European cars are commonly powered by gasoline or diesel engines and as Euro automakers generally have their own distinct engine oil specifications, it seems appropriate to give their engine oils a category of their own. “Full SAPS ” 5W-40 engine oils lead the way with 50.49% of sales, based on the fact that they have been commonly specified over the better part of the last dozen years or so. “Low-SAPS” engine oils are now recommended in many of today’s European cars, so expect Mid-SAPS and Low-SAPS engine oils to change places in these rankings in the next few years.

The definition of “SAPS” is the sulfated ash, phosphorus and sulfur content of a motor oil. The emissions sensors of some cars can be sensitive to these “SAPS” engine oil additives and that is a why a “Low-SAPS” oil may be prescribed by the car-maker.

European Motor Oil Sales Chart

Effective September 2014, Canadian Tire will stop carrying AMSOIL Synthetic Oil products in Canada.  AMSOIL and Canadian Tire had been involved in price negotiations since the early part of the year and as no resolution could be reached, Canadian Tire opted to discontinue selling the products.

So If You Were Buying AMSOIL from Canadian Tire, What to Do Now?

Why not buy at wholesale from Canada’s premiere online distributor of AMSOIL products? has wholesale programs for businesses and individuals that can destroy Canadian Tire pricing on AMSOIL products. We price in Canadian dollars and ship from Canada.

Request an official AMSOIL wholesale price list using the form on the right (bottom of the page on some mobile devices) and we will show how to buy AMSOIL in Canada at prices that will not have you missing Canadian Tire.

Not only is our pricing much lower, we can give you access to all of the container size options and dozens of other products that Canadian Tire never stocked.

We also offer something that Canadian Tire can’t and that is knowledgeable customer service. We have been distributing AMSOIL products since 2001, so if you have questions, we’ll have answers.

We ship from Mississauga in the East and Edmonton in the West by Loomis Express, so you can have AMSOIL on your doorstep in a couple of business days. is a member of the Better Business Bureau.

Getting mice in your car or truck can be an enormously stressful. Not only do you feel violated by these unwanted intruders, they are a significant health hazard and can cause extensive damage. If left unchecked, the offensive odor they leave behind can be very difficult to eliminate. Let’s explore the various ways to prevent mice from getting into your car or equipment and also offer tips on how to proceed if you have the misfortune of experiencing a mouse invasion.

How to Tell If Mice Are in Your Car or Garage

Mice may be quiet, but if you know what to look for, their presence leaves plenty of clues. The main hint is droppings. Study these images of mouse droppings and always be on the lookout for them in your car interior, engine bay and garage. Other telltale signs include shredded tissues, paper or upholstery materials.

Car Interior
Using a flashlight, inspect the dash, under the seats, in the glove box or storage areas, rear window sill, cup holders, door handles, the trunk and spare tire area.

Mice can move seamlessly between the trunk, interior and engine bay, so never assume that they are confined to one area. Their ability to seemingly move through walls can’t always be explained, but be forewarned that they can and usually will.

Engine Bay
The engine area is usually the first place mice will set up camp before moving to the comfy confines of the interior. The engine bay is an easy place to enter from the underside of the vehicle, so once your car catches their eye, they can be roaming under the hood in seconds. Again using a flashlight, inspect the complete engine for droppings or any other chewed up materials that look out of place. Mice will also leave tiny tracks in the dirt and dust of engine area. You can actually spot little claw marks in the dust. Mice will sometimes snack on the dead bugs stuck in the radiator fins. When this occurs, you will often see “bug leftovers” on the ground directly beneath the front grill. A common nesting area is in the air filter housing. This should be the first place to check if you see evidence of mice in any region of your vehicle.

Inspect shelves, window sills, cardboard boxes, work benches and even items stored in the rafters for droppings and evidence such as shredded plastic or paper. If there are mice, they will leave their mark.

What to Do If You Find Evidence of a Mouse Invasion

Do not put getting rid of mice on a “to do” list. Mice can do tremendous damage and as their droppings and urine can leave behind problematic odors, you must act immediately. We have witnessed situations where mice have left their unmistakable odor in classic cars that could never fully be eliminated. Also do not assume that only one mouse is at work.

Step One: Set Traps
Standard “snap traps” are just fine. As mice must be stopped immediately, this is the most effective way to bring an abrupt end to their activities. Do not fret about using inhumane methods as mice are a health hazard and can damage your property in short order. If you don’t have the stomach for this, find someone who does. Mouse traps are inexpensive and can found at any hardware store. Our favorite bait for traps is peanut butter.

In your car, set traps in the trunk and several locations in the interior. If the car is being left overnight, set traps in the engine bay as well. If the mouse (or mice) is still in the car, you will bag them in short order. The same applies in your garage. Set traps on shelves, window sills and work benches. Do not set traps where children may access them or where unsuspecting family members or car passengers could be injured.

Step Two: Clean Up
That is an article in itself, so here is an excellent article on the subject of mouse cleanup.

  • As your car’s interior can be sensitive to certain detergents, you’ll want to test an inconspicuous area first.
  • You may want to get the interior professionally steam cleaned.
  • Do get an effective mask for vacuuming up droppings. Hantavirus is very serious stuff, so do take precautions.
  • If the mice get behind your dash, you may need to seek professional help to disassemble and clean that area.

How to Deter Mice from Entering Your Car or Garage

Let’s start with the garage. Make sure to seal any holes or cracks that will allow a mouse to sneak in. Remember that mice are quite flexible and able to squeak (pardon the pun) through holes that are just 6 millimeters wide. Obvious measures include keeping doors and windows closed. This is especially critical during the fall season when mice are actively looking for cozy winter homes.  The seals on overhead and man-doors should be thoroughly inspected.

As for the car, refrain from parking in tall grass. Mice love tall grass as they can avoid being spotted by predators. Do not leave snacks (such as chips and nuts) or trash that could attract pests.

About Mouse Poison

Mouse poison can be very effective, but our opinion is that it is not suitable for automotive or household use. The first reason is that it not safe to keep when pets or children may be present. Secondly, if a mouse consumes the poison and chooses the area behind your dash as its final resting place, you may not appreciate the odor when you crank the heat this winter.

The Many Myths of Mouse Deterrence

Do mice hate certain smells?
There are plenty of old wives tales suggesting the mice will not enter an area if a certain scent is prevalent. These could include mothballs, apple cider vinegar, Bounce fabric softener sheets, Irish Spring soap, peppermint and the list goes on and on. We know for a fact that each and every one of these scents will not faze a hungry mouse looking for a home. All a mouse wants in life is to avoid predators, eat, build a warm home and procreate. They will feed right next to mothballs and peppermint and we have seen where they have chewed on Irish Spring soap. Do not take comfort in believing that any of these items will prevent a mouse invasion.

Electronic/Ultrasonic Mouse Repellent Devices
The idea behind these devices is that they emit a noise in an ultrasonic frequency that allegedly wards off mice. Pest experts will tell you that these units are proficient at removing money from your wallet, but not for keeping mice away. Again, keep in mind that everyday is a life and death struggle for a mouse, so an unpleasant noise is not going to stop them if your car or garage is a potential safe haven. We actually purchased one of these after a mouse got into our garage two years ago. We haven’t had mice since, but we haven’t had visits from vampires or leprechauns either, so perhaps these units keep them away as well.

So to sum up, always be on the lookout for clues and if you have mice, act quickly!

A reader asks: “Despite the fact that AMSOIL Synthetic engine oils are designed for very long oil change intervals, my personal preference is to change my oil at the mileage suggested by my owners’ manual. As I’m changing my oil more often than most AMSOIL users would, is it worth it to use AMSOIL or is it a waste of money? An honest answer would be appreciated.”

Answer: Well that is an honest question and hopefully our answer is adequate. AMSOIL offers three distinct series’ of synthetic motor oils for modern automotive service, with only one having an exceptionally long service interval. It should first be noted that today’s cars and trucks have service intervals that are far longer than those recommended just a few years ago. Two of these three AMSOIL series’ have recommended service intervals that are quite in line with the suggested oil change period in your manual. Let’s look at each of these engine oil product lines and how they fit into today’s maintenance practices.

AMSOIL OE Series- This is AMSOIL’s entry-level synthetic oil that is designed for the budget-minded car owner and the quick lube market. The OE Series is designed for the drain interval as prescribed by your manufacturer. When you have reached the mileage or time threshold suggested by your manual, you change OE Synthetic Oil. It’s that simple. This also applies to electronic oil change monitoring systems. As oil change intervals and especially oil change monitoring systems can have widely varying intervals, AMSOIL OE Series is over-built to withstand the longest of these possible scenarios. AMSOIL OE is available in 0W-20, 5W-20, 5W-30 or 10W-30.

AMSOIL XL Series- This is AMSOIL’s “middle” series of synthetic motor oils and it has a recommended service interval that is every bit as simple as that suggested for OE. The XL Series oil change recommendation is 16,000 kilometres (10,000 miles) or 6 months. When you reach one of these thresholds, you simply change XL Motor Oil. In the case of vehicles with oil change monitors, the electronic minder may take you beyond the 10,000 mile/6 month threshold. XL is also overbuilt to withstand the longest interval that your monitor may take you. AMSOIL considers these factors when formulating their products. AMSOIL XL is available in 0W-20, 5W-20, 5W-30, 10W-30 or 10W-40.

AMSOIL Signature Series- This is AMSOIL’s premiere synthetic oil line and it boasts an oil change interval that strains credulity for some observers. AMSOIL warrants that Signature Series is capable of being in service for a whopping 40,000 kilometres (25,000 mile) or one year. Keep in mind that AMSOIL offers several footnotes with this recommendation and you’ll find that this drain interval only applies to vehicles that see mainly long trips. Vehicles that see service such as regular short trips, towing, dusty conditions are relegated to a 24,000 kilometre (15,000 mile) or one year suggestion.

Regardless, these are pretty tall claims. Having been involved with the company since 2001, we can attest that AMSOIL tends to over-deliver on their claims and have over 40 years of stellar performance to back it up. Obviously very few people log 40,000 kilometres per year, but many customers do indeed change their oil every 12 months with this series. Many (including us) are happy to use a motor oil that is not cause for concern if it is left in the crankcase until we have time to change it. We tend to change our oil every 7 or 8 months, regardless of the mileage on the clock. This may be as little as 8000 to 12,000 kilometres. But it is nice to know that we can leave it for much longer if we don’t have time to deal with it.

Even if one were to simply change AMSOIL Signature Series at the OEM oil change interval (and many customers do this), this is the industry’s most elite motor oil series for gasoline engine service. It may be overkill, but engine oil is a relatively small automotive input cost. AMSOIL Signature Series is available in 0W-20, 5W-20, 0W-30, 5W-30 or 10W-30.

For more info on any of these products, visit our Synthetic Engine Oil product page.

So Are the Longer Drain Synthetic Oils Worth it?

Now that we’ve laid out the general description of each series, we can discuss the benefits and features of AMSOIL Synthetic Oil. This is boilerplate stuff, but it sheds further light on how these products are not only worth it, but a tremendous, cost-effective value. These include:

  • Reduced friction
  • Optimised gas mileage
  • Powerful wear protection
  • Dependable cold weather starting
  • Consistent protection in hot weather and under heavy load
  • Reduced oil consumption

All three AMSOIL lines provide these benefits, with the gains improving as one moves from OE to XL and then onto Signature Series.


The bottom line is that you do not have to feel obliged to max out AMSOIL’s long drain capabilities to get full value from the products. It’s is nice to know that you are using an elite synthetic in your engine and could push the drain interval longer, if you chose to do so.

We can offer any of these products at wholesale to add further value to these synthetic engine oils. Request a price list using the contact form on your upper right or call us at 1-800-748-5781.

Update: We now offer Synthetic 10W-50 and 10W-60 for KTM and Husqvarna motorcycles.

The venerable KTM and Husqvarna motorcycle brands have been around for several decades and are among the very few non-Japanese marques to survive the Asian onslaught of the motorcycle market in the 1970’s and 80’s. Although they’ve each gone through numerous ownership changes and much financial tumult, today both KTM and Husqvarna are quite relevant and producing some of the most dynamic bikes of their storied histories. Though they have been bitter rivals over the years, KTM purchased the Husqvarna brand in 2013 and they are now part of the same corporate family.

Regarding Oil for KTM and Husqvarna

As motorcycle oil is our business, we take of note of these matters and find it interesting that both Husqvarna and KTM suggest very odd viscosity grades for their 4-stroke motorcycle engines and transmissions. Many Husky models suggest a 10W-60 for their engines/transmissions while many KTM models call for 10W-50. Neither of these motorcycle oil grades is widely available.

Why would KTM and Husqvarna suggest these uncommon viscosity grades? Perhaps they may be more common in Europe, but we submit that these exceptionally wide multi-viscosity grades are suggested to cover any possible ambient temperature circumstances in which these bikes may be operated.

AMSOIL Synthetic 20W-50 Motorcycle Oil

AMSOIL 20W-50 Synthetic is an ideal oil for Husqvarna and KTM 4-Stroke motorcycles.

So What Does Oildepot Have for Husky and KTM 4-Strokes?

We can confidently offer AMSOIL 20W-50 Synthetic Motorcycle Oil to replace Husqvarna 10W-60 and KTM 10W-60. In fact, we will insist that it is an upgrade over any other engine oil option for Husky or KTM. Is 20W-50 safe for any climate in these motorcycles? We can emphatically reply YES (and then some). This AMSOIL Synthetic 20W-50 has a cold-pour-point of -40°C (-40°F), so oil flow on frosty October rides is of absolutely no concern. Power delivery and transmission performance will be consistent until the temperature dips beyond the -30°C threshold.

As for hot weather performance, AMSOIL 20W-50 has been torture-tested in engine temperatures above 277°C (530°F), with no increase in wear and the oil remaining in pristine condition. These are operating temps that would transform your dirt bike into a blob of molten plastic and aluminum, so there are zero problems with this 20W-50 replacing a 10W-60 on a plus 35°C (95°F) race day.

Other benefits for KTM and Husqvarna Four-Stroke models include:

  • Synthetic friction reduction
  • The ultimate in wear control
  • Outstanding shifting performance
  • Increased gear and wet-clutch protection
  • Cooler operation
  • Powerful anti-rust protection for off-season and wet riding conditions
  • Ultra-long oil life
  • Maintains its viscosity and does not shear down

For more information on this product and how it can be purchased at wholesale in Canada or the United States, contact us using the form on your upper right or call us at 1-800-748-5781.