Originally Posted by brucero
I was worried that Mobil 1 0-W40 was going to disappear, so I really stocked up on the last Mobil 1 sale. Just can't resist a great deal.. Probably a better investment than a CD now.
One thing I did notice was that Pep Boys didn't have any Mobil 1 0w40 on the shelf and it was the only place I could find it before around here. But they had more than an ample supply of 5w40, which is the grade M-B switched to on its MY07 & newer models.
According to the attached, we should be able to use this grade in the XFires w/o impacting performance and/or warranties.