Originally Posted By: NorWest5
I ran Mobil1 in my M5 post 10,000 miles when the S62 engine was supposed to quit consuming a quart of oil every 1,000 miles (my engine switched off consumption like a switch was flipped at 10,000 miles). What I didn't like was the valve train racket with Mobil1. When I switched over to GC 0W-30 (the original green coloured product) my noisy vanos on startup immediately stopped. I still have some of the original GC but I am considering trying Pennzoil Ultra in the Euro LL-01 flavor which I think is their 0W-40 formula. My Honda S2000 really likes GC as well but I am considering moving to 10W-30 Pennzoil Ultra to ensure I still have enough GC on hand. All other Honda's in the family fleet run either PP or PU in 0W-20 and the Honda engines really like this oil.
The PU 0w-40 has no Euro certs, only the Dodge SRT thing, as that's the application it is designed for. The PU product that is LL-01 approved is their ultra-low NOACK 5w-40, which is the product I'm currently running. It is excellent! And I expect it will show significantly less shear on a UOA than the M1 0w-40 did.