Fourth (4rd) drain on my BSH oil catch can:



Car info: 2009 R55 JCW
Current Date: 1/17/2016
Current Mileage: 24460 miles
Miles since Last Emptied: 10547 miles

Notes:
- last emptying was over 4+ years ago (November 2012)
- multiple snow seasons produced very heavy water condensation
- semi-clear fluid is discolored (oxidized rust) water is on the bottom layer
- the milky tan layer is the result of a chemical reaction involving the oil vapor with condensation
- dark brown top layer is oil.
- engine oil in crankcase was up to level at all time, and four (4x) oil changes were in the period since last drain.

Observation: car was in periods of storage / unused during this session.
When in use car was driven on longer trips along with 20+ min daily grind to the office including weekend road tips (1-2 hour drive time).

Thoughts: nothing new to report; steadily watching collection of fluids.

- Erik

 

Didn't help me with the carbon buildup. :^(