Quote:
Originally Posted by sperry
Run as fast and as far away from Mobile 1 as possible. It's well documented that since the formula change they made a few years back that turbo Subaru motors burn it easily and like to have bearing failures.
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Not trying to derail the thread but I had a quick question about this Sperry. I use the extended life M1(15k Mi) formula, since it is formualted different than the reg M1 will I still have the same issues? I had read it had a lot more zddp which was better for wear protection but worse for the cat which was why car mfgs were not recommending it. I do still change it out around 4k mi.