Mobil Super Synthetic for Long Engine Life 10W-30 Full Synthetic Motor Oil 5 Quart - Jug Mobil Advanced Performance for Outstanding Wear protection and engine cleanliness. Helps maintain fuel economy (specific grades/viscosities). Trusted by many NASCAR Teams Excellent high- and low-temperature performance. Protect for the maximum oil change interval recommended by Manufacturer's. Mobil High Mileage 10W30 is designed to help extend the life of higher mileage engines Guarantee to protect 15,000 miles between oil changes and contains extra anti-wear additive to help protect older engine parts.