Royal Purple High Performance Synthetic Motor Oil - SAE 5W30 - 5 Gallons HASZ22LT 25-5/8 x 17-1/8 in

25-5/8 x 17-1/8 in

1979-1989 GMC C3500

Shift Improver

Leaves a long-lasting non-sticky protective film

Cushions can be removed if necessary

Royal Purple High Performance Synthetic Motor Oil - SAE 5W30 - 5 Gallons HASZ22LT 25-5/8 x 17-1/8 inRoyal Purple(R) Motor Oil delivers superior protection and improves performance in four cycle gasoline and diesel engines. It increases horsepower and torque, saves fuels and reduces heat, wear and emissions. It has unsurpassed oxidation stability that allows for extended oil drains and fewer oil changes, which saves you time and money and reduces the impact on the environment. Royal Purple's motor oils for passenger cars and trucks are API licensed.