What makes AMSOIL synthetic motor oils so good? The molecular uniformity and purity of synthetic oils allows them to protect and lubricate engines better and more efficiently than conventional oils in all operating conditions. Synthetics lubricate and protect quickly in cold temperatures, maintain a dependable lubricating film in normal operating temperatures and shield moving parts from damage and wear during high-stress, high-temperature operation. AMSOIL synthetic motor oils exceed the most demanding worldwide performance standards and meet warranty requirements for all domestic and imported motor vehicle engines.


Signature Series 0W-30 100% Synthetic Motor Oil – The industry benchmark in lubrication technology. Designed for those who demand the absolute best in motor oil performance. The exclusive “extended drain” formulation delivers superior engine protection and maximum fuel economy and exceeds the requirements of modern, high performance and older engines.


SAE 0W-20 100% Synthetic Motor Oil – Engineered to outperform all conventional gasoline engine motor oils. Reduces heat, friction, and wear for maximum performance and fuel efficiency. Clean engine formula resists high-temp breakdown that forms sludge and varnish. Lasts longer and offers better protection.


SAE 5W-30 100% Synthetic Motor Oil – Engineered to outperform all conventional gasoline engine motor oils. Reduces heat, friction, and wear for maximum performance and fuel efficiency. Clean engine formula resists high-temp breakdown that forms sludge and varnish. Lasts longer and offers better protection.


SAE 10W-30 100% Synthetic Motor Oil – Engineered to outperform all conventional gasoline engine motor oils. Reduces heat, friction, and wear for maximum performance and fuel efficiency. Clean engine formula resists high-temp breakdown that forms sludge and varnish. Lasts longer and offers better protection.


SAE 5W-20 XL Synthetic Motor Oil – Extended life motor oil delivers exceptional protection for 7,500-mile/6 month oil change intervals or longer. Provides peace of mind for owners of modern vehicles where drain intervals exceed conventional oil recommendations of 3,000 miles.


SAE 5W-30 XL Synthetic Motor Oil – Extended life motor oil delivers exceptional protection for 7,500-mile/6 month oil change intervals or longer. Provides peace of mind for owners of modern vehicles where drain intervals exceed conventional oil recommendations of 3,000 miles.


SAE 10W-30 XL Synthetic Motor Oil – Extended life motor oil delivers exceptional protection for 7,500-mile/6 month oil change intervals or longer. Provides peace of mind for owners of modern vehicles where drain intervals exceed conventional oil recommendations of 3,000 miles.


SAE 10W-40 XL Synthetic Motor Oil – Extended life motor oil delivers exceptional protection for 7,500-mile/6 month oil change intervals or longer. Provides peace of mind for owners of modern vehicles where drain intervals exceed conventional oil recommendations of 3,000 miles.


100% Synthetic 5W-40 European Engine Oil – Formulated for the needs of European gasoline cars and light trucks. Blended with a broad 5W-40 viscosity rating. Allows for the maximum extended drain intervals recommended while providing superior protection and performance.


SAE 10W-40 Synthetic Premium Protection Motor Oil – For use in both gasoline and diesel engines. Offers multi-functionality and wear protection. Ideal for applications where the extra protection of a higher-viscosity oil is desired. Excellent for motor homes and older vehicles, as well as many types of modern equipment and compatible with some motorcycles.


SAE 20W-50 Synthetic Premium Protection Motor Oil – For use in both diesel and gasoline engines. Ideal for applications where the extra protection of a higher-viscosity oil is desired. The higher viscosity may help reduce motor oil consumption in equipment experiencing higher than normal oil usage rates while running lower viscosity lubricants.


SAE (20W)-40 Synthetic Natural Gas Engine Oil – AMSOIL Synthetic Natural Gas Engine Oil (ANG) was developed to deliver unsurpassed performance in natural gas engines calling for an SAE 40, low-ash (<.50%) lubricant.


Dominator 5W-20 Racing Oil – Excellent for use in high RPM, high temp racing and high-performance applications under severe conditions. Ensures critical engine components are protected for the duration of the race. Reduces friction for max power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.


Dominator 10W-30 Racing Oil - Excellent for use in high RPM, high temp racing and high-performance applications under severe conditions. Ensures critical engine components are protected for the duration of the race. Reduces friction for max power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.


Dominator 15W-50 Racing Oil – Excellent for use in high RPM, high temp racing and high-performance applications under severe conditions. Ensures critical engine components are protected for the duration of the race. Reduces friction for max power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.


Super Heavy Weight SAE 60 Racing Oil – High-viscosity oil designed for high-horsepower racing engines – typically supercharged, alcohol-burning or nitro-fuled – which require a high-viscosity oil to resist the thinning effects of fuel dilution. Also ideal for motorcycles where SAE 60 motor oil is recommended.