Coolant low question

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01-29-2009, 05:25 PM

545insc

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How often should I be replacing coolant? I just had some work done about 2 months which involved replacing the expansion tank, and I happened to notice today when I checked that it was low. I know it was full 2 months ago. I don't notice it leaking on driveway or anywhere on the engine. Any suggestions?

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01-29-2009, 05:43 PM

tbal

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cant be good, check for leaks... minor leaks overtime this happens... i just had my expansion tank replaced for the 2nd time

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01-29-2009, 06:37 PM

bimmer545

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It took 4 times for the dealership to find all the coolant leaks in my car. Expansion tank and a hose.

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01-29-2009, 07:32 PM

5-string

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My Ride: 2004 545i Sport - Silver-Grey, Nav, Active Cruise, HUD, sport seats, Logic-7, charcoal filter mod, Euro reflectors, hard-wired V1

I took my car to my local service guy for a coolant change, he noticed the coolant was low and found a leaky water pump. The car's at the dealer now getting the pump replaced under my extended warranty @ 72K miles.