Valvoline High Mileage with MaxLife Technology Motor Oil SAE 10W-30 Go to product viewer dialog for this item.

Mobil Delvac 1300 Super Heavy Duty Premium Synthetic Blend Diesel Engine Oil 15w-40 Go to product viewer dialog for this item.

These oils are built for the extreme stress of diesel engines in trucks, agriculture, and construction equipment. Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil Go to product viewer dialog for this item.

: This oil helps remove existing sludge and prevent new buildup in older engines. It is a favorite among mechanics for extending the life of high-mileage passenger cars and light trucks. Available at Walmart for $27.97 $24.97.

Full synthetics are engineered for the best protection against extreme heat and cold, often allowing for longer intervals between changes. Mobil 1 Extended Performance Full Synthetic Motor Oil 5w-30 Go to product viewer dialog for this item.

: Uniquely made from natural gas rather than crude oil, this product is 99.5% pure. It is often recommended by performance enthusiasts for its ability to keep pistons cleaner than required by the toughest industry standards. It is sold at Walmart for $26.50. High Mileage Engine Oils