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Weird problem coolant level

Posted: Sun Sep 14, 2008 9:06 pm
by Ettore Bugatti
In my Nissan Micra (1990), I have since a few days a raised coolant level in the expansion reservoir and I didn't fill it.
It warms up as normal and the coolant is dark, but contains no oil in it.

Anyone a clue?

Posted: Sun Sep 14, 2008 10:05 pm
by Yossarian
Build up of air somewhere in the system, pushing the level up? Noticed any bubbles?