I found this article quite interesting & it was a wake-up call for me.
In short, the article states that, on the Ford F53 V10 chassis, techs don't allow enough time for the newly installed oil to drain back, after engine start up, from the heads. This causes a false (low) dipstick reading resulting in an overfilling with oil.
I dug up my coach's owner's manual & found it requires 6 quarts of oil with a filter change. My past 2 preventative maintenance service records showed I was charged for 6.5 quarts & 7 quarts, respectively.
For future maintenance, I will be sure to show the shop my owner's manual specifications & be sure that I get only what Ford recommends - not a drop more!
Lori-