High Mileage oil
4 Answers
It makes no difference if you do or don't. If it makes you feel better go ahead as there is little cost difference.
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If you're not using synthetic now don't change.
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I wouldn't start suddenly using synthetic on a high mileage engine. The flow and cleaning properties may cause seals and gaskets to start weeping.
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Guru99LYXW answered 4 years ago
Owners Manuel will tell you what type of oil to use.my 2017 Honda Manuel says use conventional oil or may use synthetic!