FYI - You can no longer get that "blue" fluid and you can thank our stupid regulations for that. And yes, that "blue" fluid does stain the reservoir, but it self-unstain after about 2 fluid changes with the regular stuff.

Sorry - can't answer your other question as I haven't ran across this on mine.

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2004 X5 3.0i
Born 02/04
Delivered 03/04