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AMSOIL Marine Oils and Products
As the technology used in today’s marine applications has evolved, AMSOIL has remained ahead of the curve in performance and protection with products formulated to deliver clean engine performance and control harmful deposits, wear and rust. AMSOIL synthetic lubricants are engineered to protect your watercraft in all conditions so you can remain carefree and on the water longer.

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Synthetic 2-Stroke, 4-Stroke and Diesel Marine Oil
AMSOIL HP Marine Synthetic 2-Stroke Oil
Product Code: HPMQT-EA
Excellent for Evinrude® E-TEC™ factory-lean setting (replaces Evinrude XD100™ 2-Cycle Oil). Helps prevent deposits, protects against wear, has low smoke, protects against rust and has low aquatic toxicity. Superior performance as an injection oil or at 50:1 pre-mix.
AMSOIL Synthetic 2-Stroke Injector Oil
Product Code: AIOQT-EA
AMSOIL Synthetic 2-Stroke Injector Oil reduces wear and maximizes engine life. Its high lubricity and reliable film strength help protect against piston scuffing and bearing wear.
AMSOIL Outboard 100:1
Pre-Mix Synthetic 2-Stroke Oil
Product Code: ATOBC-EA
Designed for pre-mix applications as lean as 100:1 ratios or richer. Improves throttle response and lowers or eliminates smoke. Minimizes deposit formation and lowers emissions. Performance emphasis on the cooler operations of water-cooled motors.
10W-30 SYNTHETIC MARINE ENGINE OIL
Product Code: WCTQT-EA
  • Excellent high-stress, high-rpm endurance
  • Increase drust and corrosion protectionNMMAFC-W Catalyst Compatible
  • Perfect for hardcore anglers and boaters who demand the best protection for their marine engines
10W-40 SYNTHETIC MARINE ENGINE OIL
Product Code: WCTQT-EA
  • Excellent high-stress, high-rpm endurance
  • Increase drust and corrosion protection
  • NMMA FC-W Catalyst Compatible
  • Perfect for hardcore anglers and boaters who demand the best protection for their marine engines
SAE 15W-40 HEAVY-DUTY DIESEL AND MARINE OIL
Product Code: AMEQT-EA
  • Recommended for applications specifying API CI-4+ and prior specifications
  • Controls soot and wear
  • Reduces oil consumption and emissions
  • Delivers maximum engine protection over extended drain intervals
  • Provides outstanding protection and performance in temperature extremes
Marine Gear Lube and Semi-Synthetic Marine Oil
75W-90 100% Synthetic Marine Gear Lube
Product Code: AGMQT-EA
  • Excellent hgear and bearing protection, even when contaminated with 15% water1
  • Reduced friction and wearProtectionagainst rust and corrosion
  • Long seal life
  • Superior foam prevention
    1Based upon AMSOIL testing of AMSOIL 75W-90 Synthetic Marine Gear Lube in ASTM 3233 and ASTM D892.
25W-40 SYNTHETIC-BLEND MARINE ENGINE OIL
Product Code: WCMQT-EA
  • Excellent high-stress, high-rpm endurance
  • Increased rust and corrosion protection
Fuel Additives and Carburetor Cleaner
DOMINATOR® Octane Boost 
Product Code: AOBBE-EA
Maximizes power and improves performance in all two-cycle and four-cycle gasoline engines. Increases octane up to 4 numbers. Reduces engine knock, improves ignition and engine response, helps fuel burn cleaner and inhibits corrosion. Recommended for off-road and racing use.
Quickshot®  
Product Code: AQSCN-EA
Premium fuel additive formulated to thoroughly clean and restore peak performance in small engine and powersports equipment fuel systems.
Gasoline Stabilizer 
Product Code: ASTCN-EA
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 stored seasonal equipment such as snowmobiles, lawnmowers, motorcycles and boats.
POWER FOAM®
Product Code: APFSC-EA
Powerful foaming agents remove stubborn deposits, varnish and gum left by ethanol or degraded fuel in carbureted and fuel-injected engines. Restores startability and smooth operation while maximizing horsepower. Especially effective in powersports and small-engine applications that run, then sit for extended periods.
Diesel Injector Clean
Product Code: ADFPCN-EA
AMSOIL Diesel Injector Clean (ADF/ADFP) removes performance-robbing deposits from diesel fuel injectors to help restore horsepower and improve fuel economy. It is formulated for all types of diesel engines, including high-pressure common-rail designs.
Diesel Cetane Boost
Product Code: ACBCN-EA
AMSOIL Diesel Cetane Boost (ACB) raises the cetane number of diesel fuel up to eight points for maximum horsepower, increased fuel economy and easier starts in all diesel engines.
Spray Lubricants and Cleaner
Silicone Spray
Product Code: ALSSP-EA
AMSOIL Silicone Spray protects with a dry lubricating film ideal for surfaces that may be damaged by conventional lubricants such as grease or oil. AMSOIL Silicone Spray also helps prevent the cracking and drying of rubber and locks out moisture. It will not attract dust or dirt, keeping applications contaminant-free.
MP Metal Protector
Product Code: AMPSC-EA
Displaces water and protects metal surfaces from rust and corrosion. Provides a light film that prevents metal-to-metal contact. Excellent for use on hinges, squeaky mechanical objects, electrical systems and more. Penetrates existing rust buildup. Also dries wet electrical systems.
Heavy-Duty Metal Protector
Product Code: AMHSC-EA
Made with special rust and corrosion inhibitors. Excellent on metal surfaces, leaves a long-lasting protective coating. Protects against the effects of salt, moisture & chemical corrosion. Works as an undercoat, leaving a wax-like amber film.
Heavy-Duty Degreaser
Product Code: ADGSC-EA
Powerful solvents attack petroleum-based grime on a molecular level to loosen its hold on metal, concrete and other surfaces. Active citrus formula makes cleaning easy.
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$10 for a six-month membership
Save up to 25% on Every Order
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FREE SHIPPING

Order $100 or more in AMSOIL products at full retail prices and receive free ground shipping anywhere in the continental U.S.