Yes I did but only because it was the cheapest. That being said I wouldn't have hesitated to use the Rotella 5w-30 synthetic oil in that rig.
Like @jonheld said. The 3fe will be happy with any kind of oil.
Hell, I was doing a coolant change and oil change at the same time. I had a yellow...
Those books were printed 30ish years ago. Modern synthetic oils have come along way. I know people run that Rotella 5w-30 in all kinds of vehicles that don't call for a 5w-30.
I'm not saying it's right or wrong. Just saying that the modern synthetic oils are pretty amazing and they certainly...
On a serious note a friend and myself both had leaks that were diagnosed as rear mains on our 91's. We both had the oil pan arch gasket done and the oil leaks stopped.