Mobil 1 High Mileage 5W-20 advanced full synthetic motor oil is designed to help maximize engine performance and extend the engine life of vehicles with more than 75,000 miles. Mobil 1 High Mileage oils are made with a proprietary blend of high performance synthetic basestocks fortified with an additive system designed especially for higher mileage vehicles. Mobil 1 High Mileage motor oils are recommended for vehicles with more than 75,000 miles including all types of modern gasoline engines found in passenger cars, SUVs, light vans and trucks. Mobil 1 High Mileage motor oils are suitable for many types of severe driving applications including high-speed highway and stop-and-go city driving. It is not recommended for two-cycle or aviation engines, unless specifically approved by the manufacturer.