Mobil Super 1240 SAE40 Premium Heavy Duty Monograde Motor Oil For Long Engine Life (1 Gal/3.78 L Jug) - [Case of 4] - NEW Prevent Breakdown and extend engine life Proven protection of critical engine parts from lubrication related failure for 5,000 miles Outstanding wear protection under a wide variety of operating conditions Recommended for Heavy and light duty trucks 15 percent extra cleaning additive to help prevent the formation of sludge and harmful deposits