Oil filter OEM BMW or Mobil

I use Mobil 1 synthetic 0w20 with Mobil1 M1-209 screw-on filter for the 2012. I've been doing this for these cars since they were new. We don't put too many miles/year on these cars and so I change the oil every fall and every spring. Never had a problem.

My lovely girl friend has a 2 door BMW 1997 325i. It's a very pretty car with 176k miles on it. We drove it all over and one day it hit me, when was the last time the oil was changed? She thought her parents maintained it, but after some digging the oil hadn't been changed in 1 1/2 years and possibly 30k miles. I pulled the filter out and it was worse than this, and just fyi BMW filters like these do it kinda often from what I have read.

Then engine had 2.5 out of the 7 quarts it is supposed to have. (poured the oil in a 4 quart jug to see). I have absolutely no idea how it lasted so long. It was a ticking time bomb. So after 6 quarts of oil and the seventh being sludge cleaner, the engine has no more ticks and runs very well.

5k Mobil 1 0W40 with Mobil 1 filter.

I have used the mobil one bigger passat filter for years, works great! more oil capacity.

I use the M1-301 as well, the added capacity from the oversized filter is just nice for peace of mind. It's a PITA to get in and out though.

i used mobil 1 301 filter in my passat for a year never has black oil oh ya my motor has over 200k on it with 15psi on it. mobil 1 is good stuff

My last car ran bosch filters and mobil 1 5w30. the guts were spotless. for my break in period on the new one i used mobil 1 filter. for probably longer than i should have. filtered very well. oil had very little specks in it.

Mobil 1 0w40 in summer, 5w30 in winter, M1-205 filter all the time, oil is never black when I drain it after 4-5k miles

just changed oil tonight... Mobil 1 0W-40 (VW 502.00 approved) along with a Mobil 1 M1-205 filter... It's my second one, no issues with the first one...

the bypass valve on the Mobil filter is too low for our engines ~ 15 psi. Mahle/Mann is at ~27 psi. In certain situations, even normal situations, the mobil filter isn't filtering at all