Someone at the track mentioned that a popular fix to this problem on other cars is a to drive a small tube in the vent hole of the PS reservoir cap that empties into a bottle attached in the engine bay.
Anyone has tried that? That sounds like a great solution. I wonder if a simple kit already exists. If not, someone should make one.
Current: 2016 F80 M3 SO | AB XT1 | ZCP | etc.
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