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Can I switch back to non high mileage?

Posted By: zeke1985

Can I switch back to non high mileage? - 04/20/17 01:45 AM

I have been using high mileage oil in my car for the last two years, out of curiosity would it hurt if I switched back to non high mileage? Would it mess up the seals?
Posted By: demarpaint

Re: Can I switch back to non high mileage? - 04/20/17 01:55 AM

If the engine was good, with no leaks or oil consumption before, then switching back won't be a problem. If you had leaks, or consumption issues and the HM oil was helping, switching back might cause leaks and/or consumption to return.
Posted By: 901Memphis

Re: Can I switch back to non high mileage? - 04/20/17 04:14 AM

If you stop using high mileage your oils seals will dissolve into mush within 3000 miles and all the oil will shoot out of every part of the engine anytime you Redline the engine for more than 8 seconds at a time.
Posted By: OPR4H

Re: Can I switch back to non high mileage? - 04/20/17 05:15 AM

Yes, you can switch back.
Posted By: Matagonka

Re: Can I switch back to non high mileage? - 04/20/17 11:06 AM

Sure you can.
Posted By: LeakySeals

Re: Can I switch back to non high mileage? - 04/20/17 11:07 AM

I could not, leaks and consumption were worse fast. But I was treating an actual problem. Some just use high mileage because of the miles. They may get away with it.
Posted By: Astro_Guy

Re: Can I switch back to non high mileage? - 04/20/17 12:17 PM

I made the transition from 5w30 HM to 0w40 in the Volvo a little over a year and 17K miles ago. There are no issues to report so far on this 15 year old vehicle pushing 212K miles.
Posted By: Bamaro

Re: Can I switch back to non high mileage? - 04/20/17 12:18 PM

Yes
Posted By: Bud

Re: Can I switch back to non high mileage? - 04/20/17 12:19 PM

Not going to hurt anything, but why not stay with what you are using now.
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