oil mineral to synthetic

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Sep 30, 2004 | 06:15 PM

calvinpaul

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Mmmm Cheeze....

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From: Oklahoma

oil mineral to synthetic

Ok, I have heard that if I convert to synthetic oil from mineral my seals will shrink and I will lose compression. Is this true? I have an 85 12a with 165000 miles on it.

Sep 30, 2004 | 07:45 PM

REVHED

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From: Brisbane, Queensland, Australia.

Iron apex and side seals can shrink? lol No, it can make the soft seals like the oil control o-rings shrink which means your engine could start burning excessive oil.

Sep 30, 2004 | 09:39 PM

calvinpaul

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From: Oklahoma

so it won't make me lose compression or preformance in any way?

Sep 30, 2004 | 09:40 PM

calvinpaul

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From: Oklahoma

or excessive wear

Oct 1, 2004 | 01:04 AM

GavinJuice

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From: MN

BAH, it's completely the opposite. A true synthetic oil like amsoil will help soften the seals. For pistons its a good idea, but rotary's i'm just not going to say anything.