I've been thinking about this and Tooslick actually has said this repeatedly and I think he is right. Mobil has the same level of ZDDP as all the other Dino oils. So from what we have seen on here, it doesn't really provide significanlty better wear then some of the good Dino oils like Chevron and Pennzoil.quote:
It has a super additive package.
What it does do, is with it's PAO base stock, is go further, keep your engine cleaner and has superior cold/hot temp. properties. It's clear that if you want a superior anti-wear additive package, you have to have a NON-API oil. Redline, Amsoil, Neo and other top tier synthetics all have a significant amount more ZDDP. This is why Delvac 1, M1 15w-50 and the new Mobil 1 R are all better then M1.
Now there are certain engines that just wear low and that is when we see any oil do it's job. If you look at the latest Jeep UOA though, I think the extra ZDDP and viscosity brought the wear down considerably. I think this is also the case with LS1's although we have seen some good M1 reports in LS1's.
[ December 24, 2003, 08:28 AM: Message edited by: buster ]