Brake fluid around Reservoir cap & side 1st time seeing it

[Exclusivs]

First time seeing fluid around the cap of the brake reservoir. Also, more alarming - fluid had obviously dribbled down the side of the reservoir getting to about midpoint. Never notice this before. Have seen a race car here or there tie a absorber type towel up there. Guess this is the reason. Time for a new reservoir? Cap? Using endless fluid fwiw.

Thanks in advance!

[Estoril]

Which chassis? E93?

[mrgizmo04]

Had this happen when I filled the fluid to max mark and then ran a track session in hot weather.


Edit: Turkey basted some fluid out, no problems since.

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[Jersey_M3]

Had this happen when I filled the fluid to max mark and then ran a track session in hot weather.

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Same. I resolved by reducing to 3/4 from max, purchased a new cap and put a sweatband around the cap for good measure. Hasn’t happen since

[bigjae46]

There is a weep hole in the reservoir cap.

[jabbar12]

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