Printable View
Kind of funny... I changed my oil today and I think this thread jinx'd me because I had a hell of a time getting my K&N filter off! Unfortunately when I went to get a new filter they were out of the K&N's so since the choices were slim I got one of Frams X2's. Will see how it does. The box (if you can rely on what it says) says it has a 96% flow rate and a fully synthetic material that is suppose to flow and filter better!
The rumor that I heard about the teflon filters is that after the first pass through the engine, the teflon can clog the filter because the teflon molecules are too large to pass through the filter medium.
Also heard something bad about teflon coated utensils when they're heated above a certain temp.
I like the X2 oil filter that FRAM makes, but wouldn't use their other filters. It is interesting that Slick 50 came up in this thread, because that is the idea - FRAM wants to cash in on the Slick 50 craze.
They embed bits of Teflon into the filter media. From what I've read, the problem is that Teflon is a solid and does not belong in an engine. The makeup of Teflon means that it can't get into the parts of the engine that oil can and therefore does nothing. Plus as Sgt. Batguano touched on, as the filter gets dirtier, Teflon is unable to pass through the filter media, so the filter ends up filtering the Teflon right out.
I have also seen on more than one filter review website that DuPont (the maker of Teflon) does not recommend Teflon for use in internal combustion engines. I'm not sure how they can use it in filter production if DuPont doesn't give them the rights, but nonetheless I have read it in a few places.