This is exactly the main reason I use Mobil 1. It's not that I feel Pennzoil is inferior, it's that Mobil 1 has years of proven history in our engines. This is not limited to street. Do a little history check and research and you will see Mobil 1 has been torture tested in our engines for many years. What FCA did to ExxonMobil was just wrong, and on so many levels.
Agreed. Sadly I've done more research into this than I care to admit. I probably took the MS-12633 research to an unhealthy level. My findings are it's complete B.S. I challenge anyone here to please prove me wrong. MS-12633 is nothing more than an mild endurance test that any brand of oil could pass. Including a Walmart 0w40.
The price however to submit your oil to Royal Dutch Shell labs just to take the Test (I use the word Test loosely) is insane. To add insult to injury for FCA to make ExxonMobil jump the hoops, just because they hopped into bed with Royal Dutch Shell after the Bankruptcy was beyond a slap in the face.
It's not hard to wonder why ExxonMobil has basically flipped FCA the bird at this point. Honestly I respect them even more because of it.
LOL, Damn Bull put some miles on that oil...In all seriousness I know in your case those miles are some "hard miles" between changes.
Lastly, Don't underestimate the resiliency of the combustion engine. You would have to subject it to some series neglect to have oil be the contributing factor for failure. While in the service, driving to Vegas we acquired a pea sized hole in the bottom of the oil pan of a VW. With limited resources we were stuck with patching that hole with a piece of chewing gum and Duct tape. Filled it with 5 quarts of Prestone antifreeze, and drove 40+ miles in 110 degree heat to the next service station for repairs.
That car went another 30k miles and was sold when the owner got stationed over seas and I saw it cruising the post until I ETA'd.
Here is my Blackstone report using only Mobil 1:
View attachment 25713