DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.
A pump located inside the engine that circulates oil from the oil pan to the moving parts of the engine. These rarely fail, and if they do, usually means your engine is toast. Clean, fresh oil makes for a happy oil pump.