Red Seal Automotive Service Technician Practice Exam

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Study for the Red Seal Automotive Service Technician Exam. Prepare with multiple choice questions, supported by hints and detailed explanations. Ace your certification!

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Why is regular oil change important for vehicles?

It enhances exterior paint quality
It prolongs engine life and improves performance
It lowers tire pressure
It increases fuel tank capacity

The correct answer is: It prolongs engine life and improves performance

Regular oil changes are essential for maintaining the health of a vehicle's engine. The primary function of engine oil is to lubricate the moving parts within the engine, reducing friction and wear. Over time, oil breaks down and becomes contaminated with dirt, particles, and combustion byproducts, which can lead to sludge buildup. This sludge impairs the engine's performance, decreases efficiency, and can ultimately cause severe engine damage. By regularly changing the oil, the engine benefits from fresh, clean oil that ensures optimal lubrication. This helps to reduce wear on engine components, maintain proper operating temperatures, and support the overall performance of the vehicle. Additionally, a well-maintained engine will run more efficiently, leading to improved fuel economy and lower emissions. Therefore, regular oil changes significantly contribute to prolonging engine life and enhancing performance, making this the correct answer regarding the importance of oil changes.