Archive for category: Tech Discussion

Can AMSOIL Gear Oil Be Used In Wavetrac Differentials?

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A reader asks: I have a Moser M9 built Camaro with a Wavetrac differential. Wavetrac specifies not to use gear oil containing friction modifiers. I can’t get the oil they recommend for a cost that makes sense. Does AMSOIL have a gear oil that will work for this diff?

Our answer: All of AMSOIL’s automotive gear oils have some friction modifier content. Based on what Wavetrac is saying, it might be wise to go with a different brand for this particular application.

AMSOIL’s synthetic gear oils such as Severe Gear and Long Life Series can certainly be used in most all original equipment differentials. They are designed for both limited-slip and non-limited-slip differentials. The exception is AMSOIL Severe Gear SAE 190 Racing Gear Oil. Friction modifiers are not needed as it is strictly a racing oil.

AMSOIL Synthetics Gear Oils can also be used in many aftermarket differentials with outstanding results. AMSOIL gear oils do contain ingredients to help provide seamless performance in clutch-type limited-slip differentials. Wavetrac’s differentials might be the only situation where this isn’t a benefit. Or at the least, a harmless addition. AMSOIL synthetic gear oils provide outstanding wear control and cooler operation in most any other differential design.

In the case of Wavetrac’s aftermarket differentials, they use helical-cut gears. Apparently, the Wavetrac design requires some friction between the gears in order to function correctly. Therefore, gear oils that have some friction modifier content might be too slippery for proper operation. It is important to note that “synthetic” gear oils are not the issue for Wavetrac. It is the addition of limited-slip additives.

To find the correct gear oil for your differential, see our application guide.

Questions? Contact us using the form on this page or call us at 1-800-748-5781.

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A High Zinc Motor Oil For Winter Use?

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A reader asks: My daily driver pickup has a Chevy 283 engine with flat tappet cams. I use this truck all winter and it regularly sees sub-zero cold starts. So, I need a high zinc oil that flows fast in the winter. Will AMSOIL Z-Rod 10W-30 work well for winter use?

AMSOIL Series 3000 Synthetic 5W-30 Heavy-Duty Diesel OilOur answer: AMSOIL Z-ROD Synthetic 10W-30 does offer very good cold weather properties. But we have another option that will offer better winter start-up performance.

AMSOIL Series 3000 Heavy Duty 5W-30 Diesel Oil has very high zinc and phosphorus. It is also designed for gasoline engines. This 5W-30 has 1379 ppm of zinc and 1266 ppm of phosphorus. These amounts are more than adequate for flat tappet cam protection.

Series 3000 5W-30 has a cold-pour-point of -47°C (-51°F). Therefore, it will flow very well on those cold mornings, while delivering exceptional flat tappet cam wear control.

What About Z-ROD 10W-30 Winter Performance?

First off, AMSOIL Z-ROD Synthetic 10W-30 offers 1440 ppm of zinc and 1320 ppm of phosphorus. So, its flat tappet cam credentials are ideal.

Z-ROD 10W-30 has a cold-pour-point of -46°C/-51°F. On the surface, it looks like the winter performance between Series 3000 5W-30 and Z-ROD 10W-30 is identical. The cold-pour-points of the two oils are within 1°C.

The cold-pour-point is the temperature threshold where a motor oil stops flowing.

But there is more to the story.

Comparing “Cold Cranking Simulator” Values

An important indicator of a motor oil’s ability to perform in extreme cold is the “cold cranking simulator” (CCS) test. This is a widely recognized industry lab test. In the CCS test, a motor oil is cooled down to a specific temperature. Then a crankshaft is rotated in the chilled oil. The viscosity of the motor oil is measured in “centipoise”. (cP)

A lower viscosity number scored in this test means better oil flow in extreme cold.

Industry standards dictate that 5W-30 motor oils are measured at -30°C and 10W-30 oils are measured at -25°C.

Therefore, the CCS numbers for these two products are not measured on exactly the same scale. But we can extrapolate.

  • Series 3000 5W-30- CCS @ -30C is 5286 cP
  • Z-ROD 10W-30- CCS @ -25C is 5138 cP

Remember, the lower the score in this test, the better an oil performs in cold weather.

If Z-ROD 10W-30’s CCS test was measured at -30°C, it’s cold cranking performance would turn out to be about 15% worse than Series 3000 5W-30.

To sum up, both AMSOIL Series 3000 5W-30 and Z-ROD 10W-30 offer very good winter performance. The 5W-30 has a distinct edge in terms of winter-cold-cranking performance and would be our choice for this scenario.

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Oil Filter By-Pass Spring Setting For Harley-Davidson Engines?

AMSOIL Ea Motorcycle Oil FiltersA reader asks: Regarding AMSOIL oil filters for Harley-Davidson engines. What is the by-pass spring setting on these filters?

Our answer: AMSOIL Tech Services tells us that the by-pass spring pressure setting on both the EAOM134 (black) and EAOM134C (chrome) is 11-17 PSI. This may seem like a wide margin, but that’s the only number they offer for publication.

Technical Services also mentioned that in Harley-Davidson engines, the filter would have to completely plug to send it into by-pass mode. With millions of miles logged by our customers, they have never ever heard of this happening.

Normal operation would never put these filters into by-pass.

The Milwaukee-8 and many Twin-Cam engines use the AMSOIL EAOM134 oil filter.

About AMSOIL Ea Motorcycle Oil Filters

The heart of these oil filters is the world-class synthetic media. It delivers elite small particle removal. In addition, heavy-duty parts were chosen to construct the rest of these units. All of this makes AMSOIL filters a great match for any V-Twin engine.

Other Motorcycle Oil Filter Shopping Considerations

Don’t get caught up with searching for the longest possible filter. See our article about Why Harley-Davidson Released A Longer Oil Filter For the Milwaukee-8 Engine.

Also, be careful when comparing oil filter efficiency numbers. These numbers are not always what they seem. Efficiency numbers can be measured on different scales. Therefore, the numbers offered by two different filter makers can be apples and oranges. See the article Do Harley-Davidson Oil Filters Really Filter Down To 5-Microns?.

To sum up, the by-pass spring setting on motorcycle oils filters is not a major concern when choosing a filter. The by-pass spring setting will be in the proper range if the filter is designed for your application. It is far more important to look for sturdy construction and a high-quality filter media.

To find the correct oil filter for your Harley engine, see our application guide.

Related: Our Harley-Davidson Article Compilation 

Questions? Contact us using the form on this page or call us at 1-800-748-5781.

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Can 75W-140 Gear Oil Be Used In Harley-Davidson Transmissions?

AMSOIL Severe Gear 75W-140 Synthetic Gear OilA reader asks: Can I use 75W-140 gear oil in my 2007 Harley-Davidson Road Glide transmission? Some say that the heavier oil quiets down the transmission. Is there any problem with this?

Our answer: It is perfectly acceptable to use 75W-140 gear oil in Harley-Davidson transmissions. But, do consider that 75W-140 is much thicker than oils typically used in Harley transmissions. For instance, AMSOIL V-Twin Synthetic Transmission Oil is an SAE 110 gear oil. Let’s discuss the pros and cons of going with 75W-140.

Pros
The reason that some Harley owners use 75W-140 is that the transmission tends to run quieter. The thicker fluid can dampen noises and rattles.

Cons
The downside to using a thicker oil is that it will hold more heat. Hotter transmission operating temperatures would be the result.

Other Considerations

Wear protection– Using a 75W-140 will not improve gear wear protection. AMSOIL V-Twin Synthetic Transmission Oil or AMSOIL V-Twin 20W-50 Synthetic Motorcycle Oil can provide maximum transmission life. Wear protection doesn’t necessarily improve by using a thicker oil.

Shifting performance– There is no shifting performance benefit to using a thicker fluid. A thicker transmission fluid may actually make gear selection slightly more difficult.

How Does 75W-140 Viscosity Compare To Other Transmission Oil Options?

Here are the viscosity numbers for AMSOIL V-Twin 20W-50, V-Twin Synthetic Transmission Fluid and Severe Gear Synthetic 75W-140. The oil viscosity is measured in centistokes (cST) at 100°C.

  • V-Twin 20W-50- 18.5 cST
  • V-Twin Transmission (SAE 110)- 20.7 cST
  • Severe Gear 75W-140- 27.2 cST

Note that different scales are used to measure the viscosity of motor oils and gear oils. That’s why the 20W-50 motorcycle oil’s viscosity is so close to that of the the SAE 110 transmission fluid.

Also note that the 75W-140 is a whopping 47% thicker than the commonly used 20W-50 and 31% thicker than the (SAE 110) V-Twin Transmission Fluid.

In conclusion, 75W-140 can certainly be used in Harley-Davidson transmissions. We’re not sure that the quieter operation is worth the hotter operating temps and (arguably) stiffer shifting.

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How Often Should CVT Fluid Be Changed?

The oil change interval for CVT transmissions varies for each automaker. Below is a list of car brands and models along with the suggested CVT fluid change schedule.

CVT fluid certainly wears out over time. It should be changed much sooner than automatic or manual transmission oil. CVT fluid has to be in acceptable condition to protect against metal-to-metal contact. It also has to provide the correct frictional properties. Once the CVT fluid has broken down, poor performance and accelerated wear can start.

CVT transmissions are very expensive to replace. Being mindful of regular CVT fluid changes will pay off in the long run.

In fact, changing fluid a bit earlier than the recommended interval is prudent for most motorists. This will help provide consistent operation and improved transmission longevity. If you intend to keep your car for a long time, it’s a good idea to schedule regular CVT fluid changes.

List Of Cars And Their CVT Fluid Change Interval

Note that the recommendations below apply to models with CVT-type transmissions only. 

Chevrolet- Malibu, Spark- 45,000 miles (72,000 km)

Honda- Accord, Civic, HR-V- 25,000 miles (40,000 km)

Hyundai- Elantra- 60,000 miles (96,000 km)

Infiniti- JX35, QX60- 30,000 miles (48,000 km) or 36 months, whichever comes first.

Kia- Soul, Forte, Rio- 60,000 miles (96,000 km)

Mitsubishi- Lancer, Mirage, Outlander, Eclipse Cross- 30,000 miles (48,000 km)

Nissan- Cube, Altima, Juke, Maxima, Micra, Murano, Pathfinder, Qashqai, Rogue, Sentra, X-Trail, Versa- 60,000 miles (96,000 km) /Severe service 30,000 miles (48,000 km) or 24 months, whichever comes first.

Subaru- Forester, Impreza, Legacy, Outback, XV Crosstrek, WRX- 60,000 miles (96,000 km) or 5 years whichever comes first.

Toyota- Corolla- 60,000 miles (96,000 km)

What Is Severe Service For CVT Transmissions?

Some vehicles are used in conditions that could be defined as “severe service”. In those cases, consider changing the CVT fluid at half of the interval suggested by the car manufacturer.
Regular operation in the conditions shown below would be defined severe service.

  • Steep climbing
  • Operating in heavy mud or snow
  • Off-road use
  • Carrying heavy loads
  • Towing
  • Operating in a very hot climate

Why Should CVT Oil Be Changed?

CVT fluid is bombarded by extreme heat and shearing forces during its service life. Over time, the viscosity breaks down, the frictional properties decline and deposits may develop.

We have been told by customers that “shuddering” during deceleration and has been eliminated by fluid changes.

Why Use A Synthetic CVT Fluid?

AMSOIL Synthetic CVT FluidA synthetic CVT fluid should be used because it is highly resistant to the damaging effects of extreme heat. Many CVT designs are susceptible to damage from heat. Using a fluid that is able to withstand heat only makes sense.

When choosing a replacement CVT fluid, make sure to use only products that meet the specification suggested by your owner’s manual.

We offer AMSOIL Synthetic CVT Fluid. It is truly an elite product and a considerable upgrade over original equipment CVT Fluids. It is also available at a price that is often lower than the CVT fluid found at your car dealership.

AMSOIL CVT Fluid is compatible with numerous popular industry specifications. We have received fantastic customer feedback on its performance capabilities. AMSOIL CVT Fluid resists transmission slippage, is very resistant to extreme heat. It meets most all of the original equipment CVT fluid standards. See the product page link for complete details.

Contact us using the form on this page for pricing and questions.

 

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Articles About Synthetic Oil And Harley-Davidson Motorcycles

AMSOIL V-Twin Synthetic 20W-50Over the years, we’ve posted a number of articles discussing the use of synthetic oil in Harley-Davidson motorcycles. Here are all of the links to these articles on one page.

If you have questions on any of this content, feel free to give a us a call or contact us using the form on this page.

Engine Oil

The Classic AMSOIL V-Twin 20W-50 Torture Test
A few years ago, AMSOIL performed a landmark test to see how V-Twin Synthetic 20W-50 stood up to extreme heat. In a dyno room with no moving air, they ran a 2012 Dyna Street Bob until the engine temperature reached 550°F. The results were staggering.

Is Synthetic Oil Compatible With Harley-Davidson Cam Roller Bearings?
The myth that synthetic oil causes Harley-Davidson cam roller bearings to “slide”, “slip”, “float” or “skate” refuses to die. We still hear it to this day. This article discusses the misconception that started this rumor.

Price Comparison Of Harley Screamin’ Eagle SYN3 vs. AMSOIL V-Twin 20W-50
This article does a cost-analysis of AMSOIL V-Twin 20W-50 versus Harley Screamin’ Eagle SYN3 20W-50. The numbers were updated for the 2020 season.

AMSOIL Releases Updated Oil Change Kits For H-D Twin Cam and Milwaukee-8 Engines
For the 2020 season, AMSOIL released updated oil change kits for the Twin-Cam and Milwaukee-Eight engines.

AMSOIL Synthetic Oil Options For The Milwaukee-8 Engine
Here we discuss the introduction of the Milwaukee-Eight engine. We also recommend AMSOIL products for the engine, filter, primary chain-case and transmission.

When To Switch To Synthetic Oil In Harley-Davidson Milwaukee-8 Engine
A reader wonders when they can safely switch to synthetic oil in a new Harley Milwaukee-Eight engine. We discuss when to change the factory-fill oils and replace with synthetic oil.

Can Synthetic Oil Cure Valve Tick In A Harley Milwaukee-8 Engine?
A Milwaukee-Eight owner is hearing a valve-train noise. They wonder if AMSOIL V-Twin Synthetic 20W-50 will cure the noise. We cite some customer feedback on this issue.

Primary And Transmission

AMSOIL Introduces Dedicated V-Twin Primary And Transmission Oils
This 2015 article discusses AMSOIL’s introduction of dedicated Primary and Transmission Fluid for Harley Davidson motorcycles. Here is the rundown including how the viscosity of each product compares to V-Twin 20W-50.

Synthetic Oil Options For Harley Primary And Transmission
A reader wonders about the best AMSOIL synthetic oil options for his Harley-Davidson transmission and primary. We go through the options in detail.

Is ATF Suitable For Harley-Davidson Primary Chaincase Use?
Should automotive automatic transmission fluid (ATF) be used in Harley-Davidson primary chaincases? This article covers where this practice originated and details the pros and cons.

Should 75W-140 Gear Oil Be Used In Harley-Davidson Transmissions? 
Here are the pros and cons of running a thicker 75W-140 gear oil in Harley transmissions. We also show a comparison of the viscosity numbers of 20W-50 engine oil and dedicated V-Twin transmission oil.

Oil Filter

Do Harley Oil Filters Actually Filter Down To 5-Microns?
Harley-Davidson markets their oil filters as “5-micron”. Do they really stop all particles down to 5-microns? We discuss AMSOIL and Harley-Davidson’s micron ratings. Harley’s actual micron-rating is not what you might expect and we explain why.

Why Did Harley-Davidson Bring Out A Longer Oil Filter For the Milwaukee-8 Engine?
Harley-Davidson released a new oil filter for the Milwaukee-Eight engine that is ½” longer than the previous filter. We discuss why the new filter was released and whether or not a longer filter is vital to this engine.

Does A Motorcycle Oil Filter’s By-pass Spring Setting Matter?  
We discuss the by-pass spring pressure setting number for AMSOIL’s Harley-Davidson oil filters. Should this factor be a consideration when shopping for an oil filter for your motorcycle?

 

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Is ATF Suitable For Harley-Davidson Primary Chaincase Use?

A reader asks: I’m doing the three main fluid changes in my 2005 Harley Fatboy. For the primary, I have used AMSOIL Synthetic ATF in the past. Is that a good choice?

Our answer: The use of automatic transmission fluid in Harley-Davidson primary chaincases has been a hotly debated issue for many years. Automotive ATF would not be our choice.

Why Do Some Use ATF In H-D Primary Chaincases?

This practice seems to have originated in the aftermarket clutch market and drag racing community. One of the main reasons is that the thinner ATF will allow the clutch to grab harder during aggressive riding.

Some aftermarket clutch-makers suggest ATF meeting the Dexron III spec, while others suggest Ford “Type F”.

We spoke to one aftermarket clutch-maker who suggested that Harley-Davidson Primary Fluid did not perform well with their Kevlar clutch plates. They claim that ATF is more compatible with their clutch plates (more on Kevlar clutch plates below).

Related: See All Of Our Articles On Harley-Davidson Motorcycles And Synthetic Oil 

What Is Our Oil Suggestion For Harley Primaries?

For stock and aftermarket clutches, we suggest AMSOIL V-Twin Synthetic Primary Fluid or AMSOIL V-Twin Synthetic 20W-50 Motorcycle Oil. Here are features and benefits of both of these options.

  • Each is designed for primary chaincase service
  • Provides maximum chain and sprocket protection
  • Allows for consistent clutch performance
  • Eases shift into neutral
  • Will not thin-out under extreme heat
  • Reduces friction
  • Overbuilt for long service life
  • Compatible with aftermarket Kevlar clutch plates

Is ATF Too Thin For Harley Primary Chaincases?

AMSOIL V-Twin Synthetic Primary FluidWe submit that ATF is too thin for Harley primary use. It’s true that many Harley riders have had years of problem-free performance with ATF. We contend that a thicker oil will provide superior metal-to-metal wear protection. Chains and sprockets will last longer using a fluid with an appropriate viscosity.

Below are the kinematic viscosity numbers for AMSOIL Signature Series Multi-Vehicle Synthetic ATF, AMSOIL V-Twin Synthetic 20W-50 and AMSOIL V-Twin Synthetic Primary Fluid. The viscosity is measured at 100°C.

  • ATF- 7.5 cST
  • 20W-50- 18.5 cST
  • Primary Fluid- 18.7 cST

Compared to 20W-50 motorcycle oil and the dedicated primary fluid, ATF is very thin. For reference purposes, ATF has a similar viscosity to 5W-20 motor oil.

The AMSOIL V-Twin Primary Fluid is an SAE 90. Some may wonder how the 20W-50 and 90-weight primary fluid have a similar viscosity. The reason is that gear oils and motor oils are given different viscosity numbers on the label to prevent confusion. But in terms of the actual viscosity measured in the lab, they are very close.

In conclusion, if you have a stock clutch, use a dedicated primary fluid or a suitable 20W-50. If you have an aftermarket clutch, we would still submit that a good synthetic primary fluid is the better choice.

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Coolant Analysis Kits Available For Sale In Canada

Oildepot.ca now offers engine coolant kits for sale in Canada. The coolant samples are analyzed by a lab in Edmonton. This comprehensive procedure can test ethylene glycol or propylene glycol used in gasoline or diesel engines. This testing is performed at the same lab that conducts the oil analysis service we offer. For those simply wanting to test pH, freeze point and boil point, check out our antifreeze test strips.

What Is The Process?

  • To get a price, contact us using the form on this page. Put “coolant testing” in the “Questions or Comments” area.
  • To place an order, simply call us direct at 1-800-748-5781.
  • The kit would be shipped to you by Loomis Express from Mississauga in the East or Edmonton in the West.
  • Contents of the kit includes a 4 oz. sterile bottle and engine information form.
  • Collect your coolant sample and ship it to the Edmonton lab.
  • Once the sample reaches the lab, expect a result by email in 1-2 business days.

Why Perform Engine Coolant Analysis?

There are two main reasons why coolant analysis can be helpful.

Coolant analysis can be part of a regular maintenance program. The lab result will offer a definitive verdict on whether the coolant is suitable for continued use. This can take the guesswork out of when to change out engine coolant.

This procedure can also determine if an engine or cooling system has an issue. Problems such as a head gasket failure and excessive corrosion or depositing can be determined.

What Is The Sampling Procedure?

  • Run engine up to operating temperature to allow for adequate coolant circulation.
  • Allow engine to cool for twenty minutes before opening rad cap or draining sample.
  • There are two preferable sampling areas. The most representative sample would be found by drawing direct from the radiator using a vampire pump. The second-best option would be draining from the petcock at the bottom of the radiator (if equipped).
  • If using the petcock option, be sure to clean the area beforehand. Allow coolant to drain for a few seconds before grabbing sample. Then top-up the radiator with fresh coolant.
  • The overflow tank is not an ideal location to draw a sample. The overflow tank tends to be a resting place for sediment and deposits.

Coolant Analysis Test Result Data Points

The test result will show the following:

  • Is The Coolant Suitable For Continued Use?
  • Metals (17 types shown)
  • pH levels
  • Glycol % (Ethylene or Propylene)
  • Freeze Point
  • Boil Point
  • Nitrite
  • Supplemental Coolant Additive (SCA) Number
  • Total Dissolved Solids
  • Specific Conductance
  • Total Hardness
  • Visuals (color, oil, fuel, magnetic precipitate,
    non-magnetic precipitate, odor & foam)

Questions? Contact us using the form on this page or call us at 1-800-748-5781.

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Is A Longer Oil Filter Needed For Harley Milwaukee-Eight Engines?

AMSOIL Ea Motorcycle Oil FiltersA reader asks: Did you hear that Harley-Davidson has a new oil filter for Milwaukee-8 engines? Apparently, it’s 1/2” longer than the previous oil filter. Is AMSOIL going to spec a longer oil filter for the Milwaukee-8 engine? Or is it even necessary?

Our answer: AMSOIL is not changing their oil filter recommendations for the Milwaukee-Eight motor. They will continue to offer the EAOM134 (black finish) and EAOM134C (chrome). These are the same filters used for the previous generation of Twin-Cam engines.

Why Did Harley Release A Longer Oil Filter For The Milwaukee-Eight Motor?

Harley-Davidson did not make this change to cure an underlying problem with their previous oil filter. It seems to be simply an effort to optimize engine protection.

Harley only offers one reason in the service bulletin announcing this new oil filter. Quote: “The increased media supports the higher flow rate of MKE-8 engines”. This doesn’t imply that the new oil filter offers more flow. They are simply saying that there is a bit more filter media surface area to accommodate the increased volume of oil flow. The Harley-Davidson bulletin also states that using the previous, shorter oil filter will not void warranty.

A longer oil filter does NOT increase the flow rate. It only increases the capacity. The filter media determines the flow rate, not the oil filter size. For example, the entire line of AMSOIL motorcycle oil filters have the same flow rate, regardless of size.

Larger oil filters tend not to translate into any sort of advantage. Consider the size of an oil filter on the average V-6 car engine. Some aren’t much bigger than a motorcycle oil filter. Yet a capacity issue is all but unheard of.

The bottom line is that the quality of the filter media is the most important factor in oil filter performance.

Related: See All Of Our Harley-Davidson/Synthetic Oil Articles

AMSOIL Oil Filters Are Ideal For The Milwaukee-8 Engine

AMSOIL has determined that the size and capacity of the EAOM134 and EAOM134C is more than appropriate for the Milwaukee-Eight engine.

The vital advantages offered by the AMSOIL Ea synthetic filter media are the filtration efficiency rate and exceptionally long service life. They are made to stay in service as long as AMSOIL V-Twin Synthetic 20W-50. This is 20,000 miles or one year. Therefore, capacity and service interval duration are definitely not a shortcoming with the EAOM134 and EAOM134C units. They are constructed with top-shelf components and materials. These filters are definitely built to go the distance.

AMSOIL EAOM Oil Filters also deliver world-class particle removal. They remove 98.7% of contaminants at 20-microns or larger. See how this compares to Harley Davidson’s 5-micron oil filter claims.

Will The Milwaukee-Eight Engine Run Cooler With A Slightly Longer Oil Filter?

Not likely to any measurable degree. Using AMSOIL V-Twin Synthetic 20W-50 can lower V-Twin engine temps. Our customers observe this regularly.

In conclusion, AMSOIL Synthetic Oil Filters for the Milwaukee-Eight engine provide the proper flow rate and more than enough filtering capacity. The AMSOIL EAOM134 and EAOM134C oil filters are very much an upgrade for the M-8 engine. The AMSOIL synthetic filter media is among the most sophisticated on the market. It provides exceptional protection and long service life.

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Can AMSOIL 20W-50 Cure Harley Milwaukee-8 Valvetrain Ticking Noise?

Harley-Davidson Milwaukee-Eight Engine

photo credit: cycleworld.com

A reader asks: I’ve got a 2019 Harley-Davidson Street Glide with the Milwaukee-8 107 engine. When using conventional 20W-50 oil, I hear a valve ticking noise at about 2100 RPM. Will AMSOIL Synthetic 20W-50 cure this noise?

Our answer: Some customer feedback seems to suggest that this particular valvetrain noise disappears once they switch to AMSOIL V-Twin Synthetic 20W-50.

Please note that we haven’t personally witnessed this, nor is this a claim made by AMSOIL Inc. But this is customer feedback we have received regarding the use of AMSOIL 20W-50 in the the Milwaukee-Eight engine.

Related: See All Of Our Articles About Harley-Davidson Motorcycles And Synthetic Oil 

Why Would AMSOIL V-Twin Synthetic 20W-50 Make The Milwaukee-Eight Motor Run Quieter?

It would have something to do with the robust additive package in this synthetic 20W-50. AMSOIL formulated this oil to provide a powerful anti-wear barrier. This no-doubt contributes to overall smoother and quieter v-twin operation.

Another factor is that AMSOIL 20W-50 also lowers friction. Harley customers constantly comment that their engines have better throttle response than with other oils.

AMSOIL V-Twin Synthetic 20W-50 is a favorite with owners of all types of Harley-Davidson engines. We routinely hear about noticeably cooler operating temperatures and smoother performance. This AMSOIL 20W-50 is probably the most cost-effective upgrade you can make for your Harley-Davidson motorcycle.

Here is more information on AMSOIL new line of oil-change kits for H-D Twin Cam and Milwaukee-Eight engines. Also note AMSOIL’s superb V-Twin Transmission and Primary Fluids.

In conclusion, the Milwaukee-Eight engine is Harley’s latest and most refined engine ever. It is designed to run considerably smoother than the Twin-Cam engine it replaced. AMSOIL V-Twin Synthetic 20W-50 can optimize this smoothness and protect your investment.

Have questions or would you like to see wholesale pricing? Contact us using the form on this page.

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