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      09-28-2020, 10:19 AM   #5
dogbone
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Drives: '09 E90 M3 - IB
Join Date: Feb 2012
Location: 93 million miles from the Sun

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No magical solutions here.....the aftermarket reservoirs don't do much better. I have tried to capture the overflow from the outlet port of the stock reservoir cap and taking that to a small reservoir. It doesn't really work the way you want. I have the Bimmerworld reservoir. I simply put a wrist sweat band around the cap of the reservoir. It stops the fluid from spewing everywhere. Keep a few of them around and swap it out a couple times a year.
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