All, Well, I've done it now. I brought home a new class A. Mine is on the FORD F53 chassis. The oil fill cap & owners manual state it is to use 5W20 motor oil ? WOW! That sure is thin....
I have been called to task about my information on the Ford v10. Sorry, I am not an engine person, and just stated information that I had been given by others regarding my engine. Please disregard, and I defer to others that probably know much more than I do. Meanwhile, I will continue to use 5W20 synthetic oil.