Perhaps you’ve heard our slogan: Specialized Lubricants Engineered for What You Drive and How You Drive.^® But what does that really mean? Specialized how? Isn’t motor-oil perfor­mance measured on a simple continuum from worst to best? Not quite. Different vehicles endure different challenges depending on their design and usage. AMSOIL engineers motor oil to target those unique conditions and maximize power, performance and protection.

Here’s an overview of the AMSOIL gasoline motor-oil lines, including what makes them specialized and who they’re designed for.

AMSOIL SIGNATURE SERIES 100% SYNTHETIC MOTOR OIL

AMSOIL Signature Series 100% Synthetic Motor Oil is engineered for enthusiasts seeking maximum protection and performance. It’s precision-formulated with cutting-edge technology and a passion for making the world’s best motor oil.

• 75% more engine protection against horsepower loss and wear.¹
• Protects turbochargers 72% better than required² by the GM dexos1 Gen 2 specification.
• 28% more acid-neutralizing power than Mobil 1.*³
• 50% more cleaning power.⁴
• Trusted by professional engine builders.
• Guaranteed protection for up to 25,000 miles (40,200 km) or 1 year.

AMSOIL EXTENDED-LIFE 100% SYNTHETIC MOTOR OIL

AMSOIL Extended-Life 100% Synthetic Motor Oil is overbuilt for road warriors so they can confidently drive up to 20,000 miles (32,000 km) or one year⁵ between oil changes. A proprietary combination of advanced synthetic base oils and a boosted additive package promotes cleanliness and prolonged engine life.

• 20,000 miles (32,000 km) of guaranteed protection between changes.⁵
• 37% more cleaning power⁶ to help keep your engine running smoother, longer.
• Protects against LSPI.
• Already meets or exceeds ILSAC GF-7 and API SQ standards.

AMSOIL 100% SYNTHETIC HIGH-MILEAGE MOTOR OIL

AMSOIL 100% Synthetic High-Mileage Motor Oil is designed specifically for the unique demands of high-mileage engines, helping extend the life of your vehicle. It delivers purpose-built protection at a time in your vehicle’s life where it could benefit from more-robust maintenance.

AMSOIL High-Mileage Motor Oil provides an added boost of detergents to clean up sludge and deposits left behind from prior use of a lower-quality oil. A robust viscosity provides additional wear protection even after some wear has occurred. Added seal conditioners extend the life of seals from drying, cracking and leaking.

• Unique chemistry for vehicles with over 75,000 miles (120,000 km).
• Boosted detergent and dispersant package.
• Enhanced anti-wear additives.
• Reduced sludge by 67%,⁷ demonstrating its cleaning power that helps engines last longer and perform better.
• Guaranteed protection for up to 12,000 miles (19,000 km) or 1 year.⁸
• Already meets or exceeds ILSAC GF-7 and API SQ standards.

AMSOIL 100% SYNTHETIC HYBRID MOTOR OIL

Infrequent engine usage and increased start/stop activity place demands on lubricants not common in traditional internal-combustion vehicles. AMSOIL 100% Synthetic Hybrid Motor Oil is a premium upgrade over vehicle-manufacturer-branded motor oils, delivering purpose-built protection for the hybrid drive cycle to maximize engine life, efficiency and performance.

• Provides up to 16% better low-temperature viscosity than Mobil 1, delivering better protection at startup.⁹
• Specially formulated for hybrid engines.
• Superior sludge and deposit control.
• Enhanced corrosion protection.
• Trusted by professional engine builders.
• Guaranteed protection for up to 15,000 miles (24,000 km) or 1 year.¹⁰
• Already meets or exceeds ILSAC GF-7 and API SQ standards.

AMSOIL OE 100% SYNTHETIC MOTOR OIL

AMSOIL OE 100% Synthetic Motor Oil delivers 100% synthetic engine protection for advanced automotive technology, including turbos and direct injection. Specifically formulated for the longer drain intervals recommended by original equipment (OE) manufacturers.

• Fights sludge and deposits with 100% synthetic formulation.
• 47% more wear protection¹¹ than required by the GM dexos1 Gen 2 specification.
• 100% protection against LSPI¹² in the engine test required by the GM dexos1 Gen 2 specification.
• Already meets or exceeds ILSAC GF-7 and API SQ standards.

AMSOIL Z-ROD® 100% SYNTHETIC MOTOR OIL

AMSOIL Z-ROD 100% Synthetic Motor Oil is specially engineered for classic and high-performance vehicles to perform on the street and protect during storage. It contains high levels of ZDDP to prevent wear on flat-tappet camshafts and other critical engine components. Top-tier additives and rust inhibitors deliver maximum performance and keep your classic engine free of rust and corrosion in storage.

• Engineered for classic vehicles.
• Helps retain horsepower.
• High-zinc formula protects flat-tappet cams, lifters, rockers and other critical components.

• Protects against rust during storage.

AMSOIL 100% SYNTHETIC EUROPEAN MOTOR OIL

European performance and styling define a culture of exceptional engineering. AMSOIL matches that devotion to precision with lubricants designed for the unique demands of gasoline, diesel and hybrid European vehicles. Its precise formulation of advanced synthetic base oils and premium additives deliver exceptional engine protection without harming emissions systems.

• Designed for the unique demands of gasoline, diesel and hybrid European vehicles.
• European formula features precise blend of synthetic base oils and premium additives.
• Exceptional engine protection without harming emissions systems.

AMSOIL DOMINATOR® 100% SYNTHETIC RACING OIL

AMSOIL DOMINATOR Synthetic Racing Oil is designed to protect high-performance racing applications operating on the ragged edge. DOMINATOR is engineered to withstand the elevated rpm, high temperatures and shock-loading common to racing applications. Its robust formulation is lab-crafted to provide maximum horsepower without sacrificing engine protection and it has been tested and validated by championship-winning race teams.

• Formulated specifically for racing and high-performance engines.
• Robust formulation resists viscosity loss.
• Proprietary friction modifier maximizes horsepower and torque.
• Fortified with anti-wear additives for extra protection.

¹Based on independent testing of AMSOIL Signature Series 0W-20 using the ASTM D6891 standard test. ²Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test. ³Based upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased in July 2020. ⁴Compared to AMSOIL OE Synthetic Motor Oil. ⁵Normal Service – Up to 20,000 miles (32,000 km) or one year, whichever comes first, in personal vehicles not operating under severe service. ⁶Compared to AMSOIL OE Synthetic Motor Oil. ⁷Based on independent testing of AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil using a modified Sequence VH Test (ASTM D8256). ⁸Normal Service – Up to 12,000 miles or one year, whichever comes first, in personal vehicles not operating under severe service. ⁹Based on independent, third-party testing of AMSOIL 0W-20 100% Synthetic Hybrid Motor Oil and Mobil 1 0W-20 Hybrid Full Synthetic Motor Oil (batch code 10222M14A RN6613 326900 D340BUDE015 purchased April 17, 2023) in the industry-standard ASTM D5293 Cold Crank Simulator test as required by SAE J300. ¹⁰Normal Service – Up to 15,000 miles or one year, whichever comes first, in personal vehicles not operating under severe service. ¹¹Based on independent testing of OE 0W-20 in the Peugeot TU3M Wear Test as required by the dexos1 Gen 2 specification. ¹²Based on zero LSPI events in five consecutive tests of AMSOIL OE 5W-30 Motor Oil in the LSPI engine test required by the GM dexos1 Gen 2 specification.