Quote:
Originally Posted by derbo
FWIW,
BMW TIS doesn't mention ever using the bleeder screw on the S65. If leaving the cap off is sufficient to BMW, it's good enough for me to avoid touching that bleeder screw.
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It doesnt but when the system is completely empty and you dont want to run the car its easiest to crack the screw then fill the system, the bleeder screw actually lets alot of air escape and allows coolant to flow.