I gotta ask how you did this. Did you pull the engine and pan to check the P/U tube for cracks???
After you run the truck and get it hot.....pull the dipstick. Does the oil look foamy?
Tbar
No from what everyone has told me is to just lift the rear end up and put 3-4 more quarts into it and check it that way.
No it's not at all foamy