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
Difference b/w Mahle and Mann Oil Filters - Rennlist - Porsche Discussion Forums
BMW OEM vs Mann vs Mahle vs Hengst | Bob Is The Oil Guy
Mahle or Factory, Which is Better? - Pelican Parts Forums