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 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 wonder if thast what they call the "barrel o' crude", you know the bulk oil they use. That's why I like to do my own; I know what's going in.

 

I'm not sure what the "grade-B" is for....but I stay away from quick-lube joints. I've heard too many horror stories of filters not being changed/wrong filter installed. I always do my own in our vehicles. Come to think of it, I haven't been to one since 1991 when I was in Warrant Officer School at Ft. Rucker.