- Joined
- Dec 30, 2006
- Messages
- 29,558
All these M1 posts made me remember this old test. I'm thinking this is where I think I first heard about M1 oil:
https://www.brianschreurs.org/neptune.spacebears.com/cars/stories/mobil1.html
https://www.brianschreurs.org/neptune.spacebears.com/cars/stories/mobil1.html