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      10-13-2025, 06:53 PM   #38
Scrippy
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Drives: 2011 M3 Coupe
Join Date: Jan 2012
Location: LA,Ca

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Quote:
Originally Posted by tsk94 View Post
All of the aftermarket options are a waste of money, IMO.
The issue is the factory reservoir cap has a vent hole in it. So on track, when the fluid gets hot and slushes around it comes out of the hole (not a lot, but enough to make a mess).

This is what I did on my old E92 race car. No mess afterward and wayyy cheaper than an aftermarket option. Similar to what roastbeef mentioned above.


I'll be doing the same thing on the new M3 I'm building soon.
I like this option the best. Brilliant!
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