But there is very little reason to consider it merely average for use across a spectrum, particularly when looking/comparing results of say, M1 0w-40 across a broad spectrum. Some results of that oil are lousy, others are pretty decent.
And that is my point; more than most oils, I see a lot of praise for this one, yet I dont see a lot of real, technical reasoning behind it. It very well might be the best thing ever for a wide variety of engines, but why? There are UOAs that all seem to be consistent and good, but unlike other oils, this one (amsoil 5w-40) seems to get more blanket statements of being good than most others.
Not to hijack this thread... but again, being balanced, I see a lot of undue claims of it being top notch, but just as unfair is to claim it as average with so little known of its widespread use. (same for RLI or whatever else)
Cheers,
JMH