My wife just got the oil chaged in her Explorer today at one of those Pennzoil Ouick Lubes. On the sticker it reads the oil weight they used mileage etc., then it says Grade B oil! I checked the sticker in my F-150 truck and it's reads the same thing Grade B. I didn't know there was differnt grades of motor oil, are they using junk? What do you think guys? Thanks

 

I believe all that means is that they obtained the oil from a 55 gallon drum, rather than from individually packaged contaiiners. Nothing to worry about, allthough I think that anything lower than that is recycled oil being re-used - Definite no no!

 

I went to one of those places once and caught them putting in the grade B oil. I think it is some no name brand of unknown origin. Bulk stuff. I paid the little extra to get good oil in it.