I have a small drip on one of the copper solder joints underneath a radiator. System is a combi pressurised.
I'm going to give Fernox F4 a try, but the instructions does not say whether the system should be drained and flushed if the leak has been sealed.
Do you leave F4 in the system and can you then add the normal system protection fluid?
Richard
I'm going to give Fernox F4 a try, but the instructions does not say whether the system should be drained and flushed if the leak has been sealed.
Do you leave F4 in the system and can you then add the normal system protection fluid?
Richard