Quiz: What is the primary purpose of an engine’s oil pump? July 27, 2025 by Alex Turner What is the primary purpose of an engine’s oil pump? Discover more about Vehicle Engine and Automobile at our home page. A) To circulate engine oil and lubricate moving parts B) To increase fuel efficiency by regulating fuel flow C) To cool the engine by circulating coolant D) To filter out impurities from the fuel Submit Answer