Originally Posted by daway

Year, miles, V6 or V8....


Depending on the amount of coolant your losing in a day, wk, or month it could be some of the area(s) that are talked about above.

I have talked to bimmer techs and they state that all bimmers will lose a little coolant (topping it off) and not un-common. Also in the winter it will drop a little too.

I check my fluids every couple of weeks (i am a long time Land Rover owner...lol) and in a month or so time (so far not much this winter, last time in Oct/Nov and depending on how much miles i have gone) i have to add a little (maybe 1/4 of a cup or less) were the full mark is a little below the edge of the filler opening.

good luck!