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Old 10-05-2012, 03:49 PM   #7
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Join Date: Sep 2012
Location: Miami
Posts: 85
My Ride: bmw e46 323i
Originally Posted by briangl92 View Post
Check your expansion tank cap. I got a defective one that didn't seal properly and it caused me to lose coolant out the cap. New cap solved that issue. I also got my car back from the dealership yesterday and they didn't bother to tighten the cap all the way down. I lost 3/8ths a gallon with the cap being loose over a 20 mile drive. It left white coolant residue everywhere including on the expansion tank.
so the cap has to be reallllyyy tight?

like, i cant close it with just my hand?

Long Nights and Sandy Beaches
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