That is one of (if not the only) major gripe about M1, is the fact that alot of people say it makes their engines noisier than other oils. I personally can vouch for that, having used it before. It by no means is a bad oil (although GoldenRod will argue that point till your ears fall off). BTW, you were being WAY too conservative with your old 3K OCI's. Even now that you plan on doing 5K OCI's, it is still very conservative with M1 or PP. You could easily be using a good dino at those intervals, but that's JMO...quote:
Originally posted by drewjp:
Well, I just picked up a 5qt. jug of PP 5W-30 at Wallyworld for $19, three bucks cheaper than M1....I'll give it a shot.
I'll also probably get my first UOA after 5,000mi on this oil!
Excited to see if the noise goes down at all, too...