Could I please have some comments from informed people who have used the F8 product to clean out dirt and sludge in a central heating system (without a power flush) by leaving it in there for a week or two at most before emptying it three times and also using the F1 inhibitor?
Is it possible to unblock a heat exchanger which is clogging up?
Is it possible to unblock a heat exchanger which is clogging up?