Originally Posted by CombatNinja
I've owned four different e90s and each and every one has had a very minor coolant consumption issue. I'm talking like a quart of distilled water every 6 months to top it off. You are not realizing how small that catch can is or how little is actually in it in Dark Night's photo. Consumption at that rate is no cause for concern at all.
Yea, CN is right. It was like a half inch deep, and the OCC is only about 3-4 inches in diameter.