Posted 9/21/2025 09:55 (#11373079 - in reply to #11372904) Subject: RE: 0 - 20 oil. in new engines
Nascar is also only running a few hundred miles per oil changes in a really clean environment and a very limited number of heating/cooling cycles, I'm sure they test oil samples every oil change as well.
0 - 20 oil. in new engines
