Mobil 1 High Mileage Full Synthetic Motor Oil 5W-30 is specifically engineered to deliver advanced protection for vehicles with over 75,000 miles. This convenient 6-pack of 1-quart bottles provides a full supply for maintaining high-mileage engines with one of the most trusted synthetic motor oils available. Rated 4.8 stars by over 550 Costco members, it is America's #1 selling synthetic motor oil brand at retail and the Official Motor Oil of NASCAR.

Utilizing Mobil 1's signature Triple Action Formula, this oil delivers outstanding engine performance, protection, and cleanliness. It protects engine parts for up to 10,000 miles between oil changes (or 1 year, whichever comes first) and contains a special seal conditioner to help reduce oil leaks common in high-mileage engines. The formula actively works to prevent deposits and sludge buildup, keeping critical engine parts clean and extending overall engine life.

This oil meets ILSAC GF-6 standards to help guard against low-speed pre-ignition (LSPI) and timing chain wear while supporting improved fuel economy. It provides excellent internal engine heat protection up to 500°F and low-temperature protection down to -30°F, and is proven to cool engine temperatures by over 10% compared to conventional oil. Recommended for all types of modern cars, SUVs, light vans, and light trucks—including those with turbocharged, supercharged, multi-valve, and fuel-injected engines. Viscosity grade 5W-30; 6 x 1-quart bottles per pack.