well were starting to get into the cold weather months and i`m starting to see some water and mayo in the catch can and oil fill cap. reason being is I only drive 15 min to and from work. I might try driving once a month for an hr and half to heat up the engine and get rid of the moisture these engines produce. this weekend coming I will empty my catch can as it is a 1/4 full of water and sludge. by the way I have 207000km on the engine, so about 2000km on the catch can and engine is purring away with no codes .

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2003 bmw x5 3.0i ,219000km build date 2003-08-18