[crashoverride]

So I'm needing to put oil in the car every two weeks. Seems like Audi levels of oil usage. Realistically for this engine what would be causing higher oil usage..?
2006 e90 with 210k miles

[Brian86]

Oil separator system is the first guess. 210k miles is about 2x overdue for replacement.

Also rings if it's been poorly serviced, valve guides probably leak a little. Of course external leaks.

[vester86]

Every 2 weeks doesn’t say so much… how many miles in those 2 weeks and how much oil are you adding every time?

My 330i used to use about 1 liter oil every 5000km (3000 miles), which for me was acceptable with a yearly mileage of +/- 20.000. My new to me 330D does about 1:8000km (1:5000mls)

[sabino56]

It’s either burning or leaking. It would seem like a qt every two weeks either burning or leaking should be noticeable somewhere. You never see any oil drips under where it’s parked? Does car have belly pans?
At 210k it’d be a miracle if oil pan and valve cover isn’t leaking unless they’re been replaced.