Originally Posted by Aaron'z 2.5RS
Thanks for the info, but under "extreme" duty M1 still sounds like more of a bomb to me...
Mobil1 Resource Conserving xW-30 maybe, but that's not the only oil they make.
And a few brave souls have run the new GF5 RC xW-30 oils in WRX's with good results.
Now what's harder to find is as many consecutive uoa's on Mobil1 xW-30 in a turbo Subie as gps has posted, instead of one or two random ones.