What does synthetic oil do for my car that regular oil does not?
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Typically non synthetic oil has impurities that the oil company doesn’t remove because it’s too difficult or too costly. Synthetic oil is made in a cleaner process and doesn’t have most of these impurities. So synthetic oil is marginally better for the components that you’re putting it in.
Mainly you just want to make sure you’re getting regular oil changes and using the viscosity that the manufacturer recommends and you should be alright. If you’ve got a precision car that has a lot of tight tolerances in the engine you might get a little more benefit of using synthetic and the manufacturer might even recommend it.
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