Originally Posted By: Built_Well
I'm not saying M1 is bad. But lots of folks are saying it is often exhibiting higher engine wear numbers than Pennzoil Platinum. So why spend the extra 10 to 20 percent for it at Walmart?
I also changed the M1 early because I was eager to try PP.
I think the last part of your post betrayed you.
There are a lot of people who flame M1. And as others have stated, PP seems to be the "oil of the month" on here right now. I am sure that PP is a fine oil, but I doubt any company in history has ever spent as much on R&D and field testing as Exxon-Mobil has. They have that luxury because they are the largest manufacturer of synthetic lubricants and the largest OEM supplier. They are also the largest manufacturer and distributor of synthetic base-stocks. AMSOIL has no problem admitting that they purchase some of their base-stocks from EM. I imagine RP and Redline do as well.
Now, I am NOT saying that M1 is the be-all and end-all of synthetic lubricants. Companies like AMSOIL who have been around and making their living producing solely synthetic lubricants for as long as they have obviously have a very good product and a strong following. BUT, I also don't think M1 is as BAD as many people try to make it out to be, simply because everybody likes to pick on the guy on top.
It's great that you've chosen to run PP, I'm sure it's a fine oil. But attempting to pass-off an early drain of M1 due to other people's opinions and select UOA's as a valid reason to doubt M1 does not fly with me.
To put it another way: My 302's are likely driven harder in one week than your Toyota will ever be driven in it's life. I have posted up pictures of the inside of the one. That's M1. That engine holds 38psi hot at idle on a 30-weight, and is in a Mustang. That fact alone should indicate the type of driving it has seen. Worrying about a potential wear-metals issue with M1 in your engine is quite frankly ridiculous, given the types of cars that the stuff comes in from the factory, and those of us who RACE our cars running it, and the engines continue to last and last and remain clean inside.
You have nothing to worry about with M1. You have CHOSEN to run PP. Fantastic! But trying to justify the switch because of speculation of higher wear metals without a few UOA's in your own car to back it up? Come on