I owned an automotive shop for several years.About ninety percent of the engines that came to the shop for rebuilds had Fram filters on them.One of my friends brought his truck in because of no oil pressure(Fram filter) Crank,Rods and Mains were fried.I took the filter apart and there was no element or check valve inside.Only thing was the can and a loose spring inside it.
I put a sign up alerting customers about Fram filters.I had three customers who swore by them and told me they didn't think they were that bad.I ask them to take a trip with me and they agreed.So i took the next day off and closed the shop.We visited salvage yards in a 250 mile radius.We counted engines in their scrap engine piles and noted the filters on each.Then we went to their good engine storage area and noted all the engines and filter type.We counted over 700 scrap engines,All but 6 had Fram filters.We counted over 1,100 good engines only 2 had Fram filters.
Needless to say,They were convinced.When we got back to my shop one of the guy's opened his storage box on his truck and took out 6 Fram filters and threw them in my trash can and looked at me and said "I had no idea.No more of these for me"!