Oil serves several crucial functions in your car’s engine…and clean oil performs those functions better than dirty oil. That’s why you should change your oil every 3,000 miles or 3 months, whichever comes first. Why is oil so important? What’s the best type to use? We’re happy to tell you…
WHAT OIL DOES FOR YOUR ENGINE
Motor oil’s prime function is to lubricate every moving part of your engine with a protective film that reduces friction. It also:
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Cleans your engine. Oil collects soot, ash, acids and other moisture that eventually forms sludge. Sludge, if accumulated on critical engine parts, accelerates wear. Oil helps prevent this by keeping particulates suspended until they’re drained away when you change your oil.
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Creates a seal around piston rings and cylinder walls. Without proper sealing action, you lose power and waste fuel.
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Protects your engine against rust and corrosion.
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Cools vital engine parts your radiator coolant can’t reach. In fact, as
- Much as 40% of the cooling job in your engine is performed by oil.
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