Synthetic cross over - Pontiac GTO Forum
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post #1 of 3 (permalink) Old 06-24-2016, 08:51 AM Thread Starter
 
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Synthetic cross over

I was thinking of converting over to Mobile 1 after 100k of conventional but am worried about issues like seals leaking due to the different makeups. Any thoughts? I am now driving an hour to work at at least 80mph. Maybe an oil cooler would be a better investment.
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post #2 of 3 (permalink) Old 06-25-2016, 09:46 AM
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The seals should be fine. I've heard of some that have oil consumption but you aren't going to hurt anything to try

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post #3 of 3 (permalink) Old 06-25-2016, 09:48 AM
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Synthetic is the way to go for modern engines, and if you DO wind up with some leaks you can always switch back. Leaks (if any) happen because the synthetic oil is "slicker" and thus harder to seal. Trying it won't damage your seals.

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