MANN Filter vs MAHLE Original Oil Filter - YouTube
S54 Oil Filters - Mahle vs. Mann | Tuning Info for BMWs
BMW OEM vs Mann vs Mahle vs Hengst | Bob Is The Oil Guy
ECS Tuning :: The Truth About 993 "Small" Oil Filters - Teamspeed.com
Mahle or Factory, Which is Better? - Pelican Parts Forums
BMW PSA: Dont use these cheap filters on your cars. They cause a bunch of problems and the o-rings leak oil all over the front of your engine. Use Mann Filter. (They
Amazon.com: MAHLE Original OC 28 Oil Filter : Automotive