Gaskets and High Mileage Oil

Joined
Apr 11, 2016
Messages
293
Location
Kathleen , FL
I've wonder if you found a deal on HM oil would it have any ill effects on the seals (swelling) on a new car. Could you switch back and forth between HM and regular on a new car ?
 
Joined
Dec 26, 2005
Messages
22,968
Location
Upper Midwest
I've wonder if you found a deal on HM oil would it have any ill effects on the seals (swelling) on a new car. Could you switch back and forth between HM and regular on a new car ?
Yes. They both likely carry the same API license and therefore meet the same seal swell requirements. Even if they don’t you can still do it. Is there a warning on the container saying you cannot?
 
Joined
Mar 15, 2012
Messages
1,648
Location
PEARL River la
I've wonder if you found a deal on HM oil would it have any ill effects on the seals (swelling) on a new car. Could you switch back and forth between HM and regular on a new car ?
I got HM on sale really cheap and use it in my Carvan at 10k. You can use HM oil in new cars according to Mobil and Valvoline.
 
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