Mobil 1 High Mileage Advanced Full Synthetic 10W-30 Motor Oil 5 Quart - Jug Mobil 1 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 1 High Mileage 10W30 is designed to help extend the life of higher mileage engines Guarantee to protect 15,000 miles between oil changes , contains extra anti-wear additive to help protect older engine parts.