Quiz: What is the primary benefit of regularly changing the engine February 2, 2025 by Alex Turner What is the primary benefit of regularly changing the engine oil in a vehicle? Discover more about Vehicle Engine and Automobile at our home page. A) It helps to reduce engine wear and prolongs engine life. B) It improves the vehicle’s fuel efficiency by increasing tire pressure. C) It enhances the car’s exterior appearance and prevents rust. D) It ensures the battery remains charged and functional. Submit Answer