Oil

A substance that lubricates and cools the moving parts of the engine and reduces the formation of rust and corrosion. It contains additives which fights the corrosion of bearings, keeps small particles in suspension, reduces engine wear, and reduces oxidization, minimizes carbon, lacquer, and gum formation. Oil comes in varying viscosity weights suitable for efficient operation in cold and hot weather and for engines in varying states of wear. See bedding-in oil, break-in oil, change the oil, check the oil, clean oil, crude oil, detergent oil, diesel oil, engine oil, engine oil level warning light, engine oil pan, EP gear oil, flushing oil, full-flow oil filter gear-type oil pump, gear oil, hypoid gear oil, hypoid oil, low oil sensor, low oil warning light, lube oil, lubricating oil, micro oil filter, mineral oil, ML oil, MM oil, motor oil, MS oil, multi-viscosity oils, multigrade oil, oil filter bypass valve, penetrating oil, piston ring, oil control, pumping, oil, single-grade oil, straight-weight oil, straight weight engine oil, synthetic engine oil, synthetic oil, viscosity