by htg engineer »
Sun Feb 28, 2010 6:59 pm
I wouldn't go spending good money trying to cleanse an old system, but if you're able to - I would try removing all radiators, draining the whole system. Flush all radiators out with a hose pipe, refit radiators, refill system.
Then if you wanted you could add a cleanser and run for a few days, then follow steps above again - refill and add inhibitor.
May take a few hours but a pretty simple DIY job.
htg