Originally Posted By: tig1
M1 is also well documented by many of us here at BITOG and many folks that I know to produce very quiet engines. As for test, aren't you speaking of the test that Amsoil runs themselves, comparing Amsoil to other brands that they call out by name? Just askin.
Not speaking about their own tests, but rather everyone else's - UOAs, PQIA, etc. Amsoil has not, as OP said, ever failed to give good service.. Not saying M1 has failed, as mentioned earlier it is a great oil too.