Valvoline claims their "Restore & Protect" product returns pistons to a factory clean condition by removing 100% of engine ...

Changing your own motor oil isn't that hard, and it can save you a lot of money, but it's important to know which kind of oil ...

If your mechanic recommends a high-mileage motor oil, how do you know when it's worth it to upgrade? And what are the pros ...

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Synthetic oil used to be something only performance cars needed, but not anymore. Now it’s the manufacturer-recommended engine lubricant in many mainstream vehicles, such as the Subaru Forester ...

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