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Motor Oils

Not only has AMSOIL synthetic motor oil won accolades from fleet managers, industrial administrators and private motorists the world over, but its quality and performance capability has been scientifically demonstrated. Studies have shown that our 10W-30 ATM oil outperforms the oils of major competitors like petroleum-based Castro, Mobil, Pennzoil, Quaker State and Valvoline, as well as synthetic-based Valvoline Synpower, Quaker State, Castrol Syntec, Pennzoil and Mobil SuperSyn Multi-Vehicle. You can also count on AMSOIL for all of your Powersports needs, whether you need AMSOIL racing oil, AMSOIL motorcycle oil or AMSOIL marine oil. For top-notch oil and air filters, we’ve got you covered with AMSOIL Ea, EaAU induction, Powercore and Donaldson filters.
  • Extended Life 10W-30 Synthetic Motor Oil (XLT)

    Extended Life 10W-30 Synthetic Motor Oil (XLT)

    AMSOIL Extended Life Synthetic Motor Oils deliver exceptional protection for 7,500-mile/6-month oil change intervals or longer where stated by vehicle manufacturers or indicated by electronic oil life monitoring systems. ...

  • Extended Life 10W-40 Synthetic Motor Oil (XLO)

    Extended Life 10W-40 Synthetic Motor Oil (XLO)

    AMSOIL Extended Life Synthetic Motor Oils deliver exceptional protection for 7,500-mile/6-month oil change intervals or longer where stated by vehicle manufacturers ...

  • Extended Life 5W-20 Synthetic Motor Oil (XLM)

    Extended Life 5W-20 Synthetic Motor Oil (XLM)

    AMSOIL Extended Life Synthetic Motor Oils deliver exceptional protection for 7,500-mile/6-month oil change intervals or longer where stated ...

  • Extended Life 5W-30 Synthetic Motor Oil (XLF)

    Extended Life 5W-30 Synthetic Motor Oil (XLF)

    AMSOIL Extended Life Synthetic Motor Oils deliver exceptional protection for 7,500-mile/6-month oil change intervals or longer where stated by vehicle manufacturers or indicated by electronic oil life monitoring systems. ...

  • SAE 10W-30 Formula 4-Stroke Marine Synthetic Motor Oil (WCT)

    SAE 10W-30 Formula 4-Stroke Marine Synthetic Motor Oil (WCT)

    AMSOIL 10W-30 Formula 4-Stroke® Marine Synthetic Motor Oil (WCT) is a premium quality synthetic formulation engineered for the harsh operating conditions of marine environments. ...

  • SAE 10W-40 Formula 4-Stroke Marine (WCF)

    SAE 10W-40 Formula 4-Stroke Marine (WCF)

    AMSOIL 10W-40 Formula 4-Stroke® Marine Synthetic Motor Oil (WCF) is a premium quality synthetic formulation engineered for the harsh operating conditions of marine environments. ...

  • Synthetic 0W-30 Motor Oil (TSO)

    Synthetic 0W-30 Motor Oil (TSO)

    Modern passenger car and light truck engines are built for fuel efficiency and power. AMSOIL Synthetic 0W-30 Motor Oil optimizes efficiency and power without the sacrifice in wear protection ...

  • Series 2000 Synthetic 20W-50 Racing Oil (TRO)

    Series 2000 Synthetic 20W-50 Racing Oil (TRO)

    The number one choice for racers of all types of vehicles. Special synthetic base stock blend and advanced additive package provides ...

  • Signature Series 0W-30 100% Synthetic Motor Oil (SSO)

    Signature Series 0W-30 100% Synthetic Motor Oil (SSO)

    AMSOIL Signature Series 0W-30 Synthetic Motor Oil is the industry benchmark in lubrication technology. Engineered with the world’s finest synthetic base oils and high performance additives ...

  • Synthetic Blend 15W-40 Heavy Duty Motor Oil (PCO)

    Synthetic Blend 15W-40 Heavy Duty Motor Oil (PCO)

    AMSOIL Synthetic Blend 15W-40 Heavy Duty Motor Oil (PCO) features a dual-base of premium synthetic and hydro-processed base oils in formulation with proven high quality anti-wear additives. ...

  • SAE 20W-50 Synthetic Motorcycle Oil (MCV)

    SAE 20W-50 Synthetic Motorcycle Oil (MCV)

    High Performance Lubricant for Engines, Transmissions and Primary Chaincases API SG, SL/CF; JASO MA/MA2; API GL-1 ...

  • SAE 10W-40 Synthetic Motorcycle Oil (MCF)

    SAE 10W-40 Synthetic Motorcycle Oil (MCF)

    AMSOIL Synthetic Motorcycle Oils have been reformulated with new high performance additive technology that provides even greater multi-functional benefits for the special requirements of motorcycle applications. ...

  • Series 3000 Synthetic 5W-30 Heavy-Duty Diesel Oil (HDD)

    Series 3000 Synthetic 5W-30 Heavy-Duty Diesel Oil (HDD)

    AMSOIL Series 3000 100% Synthetic 5W-30 Diesel Oil (HDD) delivers extraordinary lubrication in both diesel and gasoline engines found in commercial, fleet and personal vehicles. ...

  • AMSOIL Synthetic 5W-40 Premium Diesel Oil (DEO)

    AMSOIL Synthetic 5W-40 Premium Diesel Oil (DEO)

    AMSOIL Synthetic 5W-40 Premium Diesel Oil (DEO) is the premium choice diesel oil for model year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission quality oil standards. ...

  • 100% Synthetic 10W-30 Motor Oil (ATM)

    100% Synthetic 10W-30 Motor Oil (ATM)

    AMSOIL 100% Synthetic 10W-30 Motor Oil (ATM) delivers extraordinary lubrication in all types of automotive gasoline engines. By combining the industry premier synthetic technology ...

  • Formula 4-Stroke® 10W-40 Synthetic Scooter Oil (ASO)

    Formula 4-Stroke® 10W-40 Synthetic Scooter Oil (ASO)

    AMSOIL Formula 4-Stroke® 10W-40 Synthetic Scooter Oil (ASO) is formulated specifically to meet the special needs of today’s high-tech air- and water-cooled fourstroke motorized scooters ...

  • 100% Synthetic 0W-20 Motor Oil (ASM)

    100% Synthetic 0W-20 Motor Oil (ASM)

    AMSOIL 100% Synthetic 0W-20 Motor Oil (ASM) delivers extraordinary lubrication for automotive gasoline engines. AMSOIL combined the industry premier synthetic technology ...

  • 100% Synthetic 5W-30 Motor Oil (ASL) Best Seller

    100% Synthetic 5W-30 Motor Oil (ASL) Best Seller

    Engineered to outperform all conventional gasoline engine motor oils. Reduce heat, friction and wear for maximum power, performance and fuel efficiency. Clean engine formula. Resists high temperature break down that forms sludge and varnish. ...

  • Formula 4-Stroke® 10W-30/SAE 30 (ASE)

    Formula 4-Stroke® 10W-30/SAE 30 (ASE)

    A commercial grade formulation designed for hot temperature, severe service operation of small engines where routine maintenance is often difficult or infrequent. Recommended for use wherever SAE 10W-30 or SAE 30 oil is specified... ...

  • SAE 20W-50 Synthetic Premium Protection Motor Oil (ARO)

    SAE 20W-50 Synthetic Premium Protection Motor Oil (ARO)

    Formulated for use in both gasoline and diesel engines. Offers multi-functionality and excellent wear protection. Ideal for applications where the extra protection of a higher viscosity oil is desired. ...

  • SAE (20W)-40 Synthetic Natural Gas Engine Oil (ANG)

    SAE (20W)-40 Synthetic Natural Gas Engine Oil (ANG)

    Low ash (< 0.5%). Resists oxidation and acids. Lasts longer. Can be used to safely extend drain intervals with oil analysis. Reduces oil consumption. Reduces valve recession. Flows well in cold temperature. Low volatility. ...

  • SAE 10W-40 Synthetic Premium Protection Motor Oil (AMO)

    SAE 10W-40 Synthetic Premium Protection Motor Oil (AMO)

    Formulated for use in both gasoline and diesel engines. Offers multi-functionality and excellent wear protection. Ideal for applications where the extra protection of a higher viscosity oil is desired. ...

  • Synthetic Heavy-Duty Diesel & Marine Motor Oil SAE 15W-40 (AME)

    Synthetic Heavy-Duty Diesel & Marine Motor Oil SAE 15W-40 (AME)

    AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil (AME) is a premium diesel oil providing excellent performance in all types of diesel engines where highly effective control of wear and deposits is vital. Built with heavy-duty dispersant/detergent add ...

  • SAE 60 Synthetic Racing Oil (AHR)

    SAE 60 Synthetic Racing Oil (AHR)

    AMSOIL SAE 60 Synthetic Super Heavy Weight Racing Oil is designed for high horsepower racing engines, typically supercharged and alcohol-burning or nitro-fueled, and requiring a high viscosity oil to resist the thinning effects of fuel dilution. ...

  • European Car Formula Synthetic 5W-40 Motor Oil (AFL)

    European Car Formula Synthetic 5W-40 Motor Oil (AFL)

    AMSOIL European Car Formula Synthetic 5W-40 Motor Oil (AFL) is specially formulated for the lubrication needs of modern European gasoline and diesel cars and light trucks. Formulated with advanced AMSOIL ... ...

  • Formula 4-Stroke® Power Sports 0W-40 Synthetic Motor Oil

    Formula 4-Stroke® Power Sports 0W-40 Synthetic Motor Oil

    AMSOIL Formula 4-Stroke® Power Sports Synthetic Motor Oil (AFF) is specially formulated for ATVs, UTVs, snowmobiles and other power sports applications. ...

  • Synthetic 10W-30/SAE 30 Heavy Duty Diesel Oil (ACD)

    Synthetic 10W-30/SAE 30 Heavy Duty Diesel Oil (ACD)

    AMSOIL Synthetic 10W-30/SAE 30 Diesel Oil (ACD) is formulated with premium synthetic base oils that exceed both 10W-30 multi-grade and SAE 30 straight-grade viscosity requirements for outstanding ...