I've read several filter studies. Fram is pretty bad. Most of the studies are done by import people (mostly Honda), followed by Mopar. With these cars the correct oil filter is critical. I've known several Honda owners who have problems with Frams. Some had their crankcase foam up. Most switched to STP (damn good for the money) or back to factory filters. I've had problems on Mopars with maintaining correct oil pressure, even on a Jeep. On my Opel I use Purolator. I can get easily.