Quote:
Originally Posted by DavidZ
You should just be able to remove and reuse the blue drain plug.
If you remove the white sleeve, you'll need to buy a new one because its locking tabs will snap off.
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About to do my coolant and a buddy of mine who's an ex-BMW tech recommended replacing the whole petcock (white thing) along with the blue screw. His point (and it makes sense) is that it's just plastic and it's sitting in boiling water constantly for years. Germany isn't exactly known for the best plastics anyway. It's such a cheap part (~$10) and it's just good preventative maintenance. He also recommends replacing the bleed screw, or at least the o-ring on it.