Mobil 1 (120903-3PK Extended Performance 0W-20 Motor Oil - 5 Quart, (Pack of 3) Helps prevent deposits and sludge build-up to enable long engine life Excellent overall lubrication and wear protection performance under many operating conditions, from mild to severe Helps to provide outstanding engine protection at oil change intervals of up to 15,000 miles or1 year, whichever comes first Exceptional control of oil breakdown and helps maintain stable oil viscosity Helps maintain long engine life and is compatible with engine seals; helps provide less stress on the starting system