Roger, dunno if you are refering to a couple threads I made on an A/G Body forum and F-Body forum quite a few years ago... but if not, I used to have a oil filter opener... got it from my Uncle who used it to examine his race engine's oil filters. What I found inside the Frag'em did not impress me at all... reinforced cardboard clean/dirty oil seperator... not exactly a feature Id trust. These days, I have no idea if they fixed the design and they do have "better" ie more expensive ones... Personally, I stick to Purolator... they still have the best filter design for short money. AC Delco used to be a rebadged Purolator... no idea what they are now, but they are not the same anymore.