Quality automotive fluids are essential to keeping vehicles running. Protect diesel engines from liner pitting and hard-water scale deposits with the proper antifreeze. Transmission fluid provides excellent oxidation stability and deterioration resistance. And ensuring autos have enough windshield wash fluid is essential to keeping a clear view of the road ahead, essential to safe driving. Find the widest selection of automotive fluids, including brake fluid, auto transmission fluid and more, when you shop Grainger.