Mobil 1 0W-40?

[LAP1DOUG]

Cue up my non-scientific Mobil rant:

Many years ago I used Mobil 1 exclusively. Then about the time that Exxon merged or bought out Mobil, I noticed that when I was pouring the oil into my BMW, the pour point seemed different, and the color had changed somewhat, though I was using the exact same viscosity type that I always had.

Then I read on Bob's the Oil Guy that Exxon Mobil had changed from using one class of synthetic type to another class. By "class" I am referring to something called a PAO class. As I recall, they had changed from a Class IV to a Class III.

I'm not sure if a Class III is really a bad oil, but the fact that this company changed their product without any other labeling change felt like a bait and switch to me. So, I will never ever use another Mobil product.

By the way, I use Red Line exclusively now.