mixing Fernox leak stop and unknown inhibitor

[george121212]

Hi I have a Worcester Combi boiler 3 years old that is losing some pressure every 6 weeks for the past 12 months.
It is covered by the Worcester warranty so a Worcester engineer came out assessed it and said everything including the valves and expansion tank looks ok.
He said it is most likely a problem with a small leak somewhere in the pipework.

He suggested adding some leak sealer through a towel rad.
When the boiler was installed 3 years ago I am sure he put an inhibitor in at install although I cannot remember the brand.

My question is I have some Fernox leak sealer, is there a risk here mixing it with an unknown inhibitor in the system like sentinel?
There appears to be mixed comments online that this could form a jelly sludge and cause blockages?

thanks

 

[denso13]

The boiler is relatively new, I'd be looking for the leak, not adding sealer.