I wouldnt let Wal-Mart work on my truck.
This is no lie, I was working one day and I was with the oil guy at the company that I used to work at.
We were there to suck out their used oil.
There was a brand new F-250 in for its first oil change.
One guy was in the pit draining the oil, the car in front of the truck left, so the guy up top...with no drain plug in the truck...started it up and drove it forward to the next place.
The next car pulled up and the guy down below started draining that one and then replaced the drain plug on the Ford...just like it was no big deal.
Then the guy up top filled it with new oil.

 

I can't afford to have any place change the oil in my Ford. The Powerstroke takes 15 quarts of oil. When these oil change places charge for extra quarts over 5 it gets costly quick. Plus the Ford sits high enough even my fat butt can slide underneath.

 

My cousin did an oil change on a v10 triton, said he did the whole job sitting up right, indian style. I forget how much oil it took but it was just about one **** ton.