I have a small radiator that I want to drain so that I can add cleaner to my closed loop system. I have closed both valves isolate the radiator. The radiator has a drain off valve on the lock shield side which a radiator bleed key appears to fit on to but when I try to turn it, the key appears a fraction big as it 'skips'.
I can't get pliers on it as it's recessed in a circular section. Any ideas?
I can't get pliers on it as it's recessed in a circular section. Any ideas?