Which of the following is a function of automotive oils?

Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Lubrication is the primary function of automotive oils. Oil forms a thin, protective film between moving parts such as pistons, crankshaft bearings, and camshafts, reducing metal-to-metal contact, lowering friction and wear, and helping manage heat as the engine operates. It also aids sealing tiny gaps and can help transport contaminants away from surfaces, while additives provide protection against corrosion. The other options don’t fit because air is cleaned by the intake and filters, not by oil; fuel economy isn’t increased by oil alone, and horsepower isn’t gained solely through fuel or by oil.