AMSOIL has a synthetic lubricant for every type of marine engine made. Two or four stroke, diesel or gasoline, AMSOIL has an engine oil that will keep your boat’s engine running cool and smooth all day long. During periods of downtime, AMSOIL’s lubricants and fuel additives will keep your engine deposit and rust free with the most sophisticated chemistry available. Protect your investment with AMSOIL products.
Buy AMSOIL synthetic outboard and marine oil at the best prices in Canada and the United States. Request a wholesale price list using the contact form on this page or call 1-800-748-5781.
Synthetic Four-Cycle Gasoline Motor Oils
4-Stroke Synthetic 10W-40 (WCF) or 10W-30 (WCT)
Formulated specifically for use in 4-stroke gasoline fueled engines used in marine applications. Offers unsurpassed wear protection, viscosity stability, low volatility and excellent rust protection. NMMA FC-W Catalyst Compatible approved and “Warranty Certified”. Recommended for use in 4-stroke outboard motors including Honda, Yamaha, Mercury, Suzuki, Johnson-Evinrude (BRP), Nissan and Tohatsu. Excellent for use in marine inboard engines including Mercury (MerCruiser), OMC, Volvo-Penta, Crusader, Marine Power, GM, Ford and Chrysler. Recommended for use with personal water craft (PWC) including Sea Doo (BRP), Honda, Yamaha and Polaris.
SAE 25W-40 Synthetic-Blend Marine Engine Oil
Formulated specifically for Mercury Marine outboard, stern drive or inboard engines that require a 25W-40 motor oil. Meets the NMMA “FC-W Catalyst Compatible” specification. A superb upgrade over Mercury Synthetic-Blend SAE 25W-40 Marine Engine Oil at a great price.
SAE 20W-50 Synthetic Premium Protection Motor Oil (ARO)
Formulated for use in both gasoline and light duty diesel engines. Offer multi-functionality and excellent wear protection. Ideal for applications where the extra protection of a higher viscosity oil is desired.
Synthetic Two-Cycle Motor Oils
HP Marine Synthetic 2-Stroke Oil (HPM)
Excellent for all outboard motors with a performance emphasis on modern direct fuel injected (DFI) technology. Outstanding wear control, smooth operation and low aquatic toxicity. Excels in Evinrude® E-TEC™ factory-lean setting (replaces Evinrude XD100™ 2-Cycle Oil). Injector use or 50:1 premix. For applications requiring NMMA TC-W3. Injector or 50:1 premix.
Synthetic 2-Stroke Injector Oil
An excellent value-priced synthetic option for outboard engines and personal watercraft. Also suitable for snowmobiles. Offers low-smoke/low-odor performance and strong rust protection. Suitable for applications requiring NMMA TC-W3 or API-TC specifications.
Saber™ Outboard Pre-Mix (ATO)
Designed for pre-mix applications. Saber™ oils improve throttle response, lower or eliminate smoke, minimize deposit formation and lower emissions. Saber™ Outboard has a performance emphasis on the cooler operations of water-cooled motors. Can be mixed at ratios as lean as 100:1. Richer mix ratios may certainly be used where desired. For applications requiring NMMA TC-W3. (USA only)
Interceptor Synthetic 2-Stroke Oil (AIT)
For personal watercraft or jet boats requiring an API TC oil. Designed to deliver outstanding exhaust power-valve cleanliness. Unparalleled performance and wear control. A clear-cut upgrade over OEM labelled oils. Injector or 50:1 premix.
Synthetic Diesel Motor Oils
SAE 15W-40 Synthetic Heavy-Duty Diesel and Marine Oil (AME)
High 12 TBN controls acids from combustion blow-by and EGR. High levels of detergency and dispersancy additives control soot thickening, oxidation and wear. Resists bore polishing, deposit formation and ring sticking. Provides clean engine performance. Extended drain capabilities reduce downtime and motor oil expenses. Meets API CI-4+ specification.
Synthetic 5W-40 Premium Diesel Oil “API CJ-4” (DEO)
The premium choice for API CJ-4 emission-quality 5W-40 diesel oil required by some model-year 2007 and newer diesel engines. A low-sulfated ash formulation that provides excellent performance in low-emission diesel engines. It is compatible with all exhaust treatment devices and is designed to extend the service life of diesel particulate filters. Provides maximum protection for up to 3 times the OEM-recommended drain interval, and further with oil analysis.
AMSOIL EaO Oil Filters (EaO)
For I/O and inboard engines AMSOIL Ea Oil Filters are made with premium-grade full synthetic media. Ea Oil Filters feature advanced full synthetic nanofiber technology, making them the highest efficiency filters that are available for the marine market.
AMSOIL EaOM Outboard Oil Filters (EaOM)
For Four-Cycle Outboards AMSOIL Ea Motorcycle/Outboard Oil Filters are made with premium-grade full synthetic media. Ea Motorcycle/Outboard Oil Filters feature advanced full synthetic nanofiber technology, making them the highest efficiency filters available for the marine market.
Synthetic Gear Lubes
Universal Synthetic Marine Gear Lube (AGM)
Provides true marine gear performance. Contains a stable extreme pressure additive package that provides superior protection from shock loading. Resists foam and retains extreme pressure qualities even when subjected to 10 percent water contamination. For use in outboard lower units, sterndrives, V-drives, bow and tunnel thrusters and marine transmissions requiring an SAE 75W-90 or 80W-90 lube meeting either GL-4 or GL-5 performance standards.
Marine Gear Oil Hand Pump
A clean and efficient way to change lower unit oil in outboards, v-drives and stern drives. Suitable for all lower unit brands including Mercury, Evinrude, Honda, Suzuki and many more. Includes special fitting for Yamaha and Tohatsu lower units.
Marine Greases and Coatings
Synthetic Water Resistant Grease (GWR)
Resists water washout and degradation. Unparalleled protection for boat trailer wheel bearings and other components frequently exposed to water. Stays in place, lubricates and protects against rust.
MP Heavy-Duty Metal Protector (AMH)
A heavy-duty spray lubricant fortified with special rust and corrosion inhibitors. Penetrates and adheres to metal surfaces, leaving a long-lasting protective coating. Apply MPHD to any metal surface that requires a heavy-duty lubricant or is exposed to the damaging effects of salt, moisture or chemical corrosion. Works as an undercoat, leaving a wax-like film. Dry to the touch. Does not attract dust. (USA only)
MP Metal Protector (AMP)
Displaces water and protects metal surfaces from rust and corrosion. Provides a light film that prevents metal-to-metal contact. Excellent for use on guns, hinges, squeaky mechanical objects, electrical systems and more. Penetrates existing rust build-up. Also dries wet electrical systems.
Silicone Spray (ALS)
Perfect for lubricating non-metal surfaces that contact with metal, nylon, cardboard, fiberglass, wood or plastic surfaces. Special non-staining formula. USDA H-1 rated for incidental contact with food. Excellent for waterproofing leather boots, shoes, jackets, suede etc. (USA only)
Propylene Glycol Antifreeze and Engine Coolant (ANT)
Extended service antifreeze and engine coolant for closed system marine applications. Compatible with all the major brands of anti-freeze. Essentially nontoxic and biodegradable. Provides superior performance in all climates. Contains special corrosion inhibitors and antifoam agents.
Powersports Antifreeze And Coolant
A pre-mixed ethylene glycol anti-freeze/coolant for high-performance small engines. Ideal for personal watercraft and other high-performance small engines. Provides reliable protection for hard-working engines. Also protects against corrosion, scaling and deposits.
Dominator Coolant Boost
Lowers engine operating temperatures with quick and effective heat transfer inside radiators and cylinder heads. Also offers advanced corrosion protection. Can be used with straight water or 50/50 coolant/water mixtures.
Quickshot Powersport Fuel Additive
Cleans fuel system and combustion chambers in all two-cycle and 4-cycle marine engines. Prevents dangerous ethanol/water separation. Provides outstanding “in-season” fuel stability. Prevents the formation of varnish and deposits. Protection from the three major fuel-related issues plaguing small engines and powersports equipment: ethanol, water and dirty pump gas.
Octane Boost (AOB)
Maximizes power and improves performance in all two-cycle and four-cycle gasoline engines. Increases octane number up to seven points. Reduces engine knock, improves ignition and engine response, helps fuel burn cleaner and inhibits corrosion.
Gasoline Stabilizer (AST)
Reduces the oxidation process that occurs when fuel is stored for extended periods to prevent the formation of varnish and sludge which can clog injectors, stick floats and cause poor engine performance. Ideal for all gasoline-fueled marine applications. As today’s fuels degrade rapidly, this product should be used in every tank of fuel.
Engine Fogging Oil (FOG)
A highly effective rust preventative designed to protect internal engine components during storage or long periods of inactivity. Ideal for all two or four-stroke marine engines, gasoline or diesel fueled.
Diesel Fuel Additives
Diesel Concentrate (ADF)
A total system cleaner and lubricity improver for all types of diesel engines. Improves the performance, fuel efficiency and longevity of diesel engines while reducing deposits, black smoke and emissions. Improves fuel economy by cleaning dirty injectors and restores horsepower. Designed for use in all diesel-fueled engines.
Diesel Cold Flow Improver (ACF)
A premium fuel additive can improve diesel pour point by as much as 32°C. Designed for use in #1 diesel fuel, #2 diesel fuel, biodiesel and hard-to-treat ULSD fuels and conventional fuels. Contains jet fuel-type de-icer to help prevent ice formation in fuels that are contaminated with water.
Diesel Concentrate Plus Cold Flow Improver (DFC)
Combines the powerful features of the Diesel Concentrate and Diesel Cold Flow Improver. Formulated with excellent detergency properties to help keep injectors, rings, piston crowns clean and the fuel pump lubricated. Also lowers the diesel fuel “cold filter-plugging point” by as much as 19°C.
Cetane Boost Diesel Fuel Additive (ACB)
Improves combustion efficiency to increase power in diesel engines. Raises cetane three to seven numbers. Also improves low-temperature starting, fuel ignition quality and reliability. Treats up to 200 gallons. For use in any diesel-fueled engine.
Diesel Recovery Emergency Fuel Treatment
Quickly dissolves gelled fuel, thaws frozen fuel filters and reduces the need for a new filter. Performs well in all diesel fuels, including ULSD, off-road and biodiesel. An excellent preventative measure against getting stranded.
Carb Cleaner & Degreaser
Power Foam Engine Cleaner & Degreaser
AMSOIL Power Foam cleans intake valves, intake manifolds and throttle plates to keep the combustion intake system running at peak efficiency. Safe for exterior engine degreasing as well. (USA only)
BriteSide® Miracle Wash Waterless Wash and Polish (AMW)
This unique dry wash and polish delivers outstanding performance and quick, easy and economical spray application. No water required. It’s simply the fastest way to clean your equipment.