Beware Mann oil filters for M20 - buy original instead.

[Zeuk in Oz]

Changed oil on 3 cars over the weekend - had been noticing an oil leak from my M20 525i - turned out to be the crappy sealing ring on the Mann cartridge oil filter I had fitted. I ordered a couple at some stage but had resisited using one as I usually prefer original oil filters.
Back to original BMW filter & no leak at all.

[Bruno]

I thought Mann and Mahle made filters for BMW... BMW doesn't make it's own filters.