mrthingyx said:Hmmm... black bits come out of the loop? Probably copper oxide, but where from?
Did you flush the radiator in the end?
Nice loop, by the way!
WJA96 said:Remember the gurgling sound - if you hear it again once the system quietens down - it means you have a leak! I know this now and won't leave it running for a week before investigating next time. UV carpet stains![]()
I really don't want to drain and go through it all again! argh. 