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18/11/2021 10:31 pm
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I have a 1997 Pontiac Firebird Trans Am with approx. 104000 miles with 6 speed stick. Is it wise to say that when you reach "high mileage", you go up a weight? Mine take 5w30, so do I go 10w30? Or use a stabilizer with 5w30? Is this a thing for older cars or for across the board?
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18/11/2021 10:37 pm
If it runs fine, then keep using 5w30
why the downvote?
I accidently hit upvote. My Apologies. Where do you think people get this idea to upgrade oil weight when at high mileage?
if it's leaking or burning oil
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