You must keep the bleeder valve open for a few days or several heat cycles. From cold engine back to cold engine = 1 cycle.
Just opening it when hot won't do anything. After the heat cycles, you may find the coolant level has dropped slightly - a sure sign you had air pockets in the system....
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2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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