No inhibitor, is it too late?

[Sid Viscous]

Evening hive-mind,
Yesterday I serviced a 5yr old Ideal combi. When I took the top off the magnaclean, (which was chocka,) I was alarmed to see the system water was the colour & consistency of cream of tomato soup! I didn't need a test kit to realise that there's no inhibitor in the system. Obviously the system is corroding from the inside out. It's piped up entirely in plastic with normal steel panel rads.
My question is would a p-flush & retreatment be the way forward or is the damage already done & he'll have to have all the rads changed?

 

[ShaunCorbs]

Yes best way

Even a hot flush would be better than nothing

 

[tolly]

Was the plastic pipework barrier or not?

 

[Sid Viscous]

It's that grey stuff. Don't use it myself so not sure on spec...

 

[tolly]

Theres a few different types that are grey...you would have to read the side of it or look at a cross section to confirm. Seen a couple of installs in non barrier that have sludged up massivly supposedly down to the non barrier ingressing air

 

[king of pipes]

Never to late bud get it hot flushed , cold flushed you can then power flush it to removed any stubborn debris will take you all day to do a proper job . Cheers kop

 

[Sid Viscous]

I seem to recall, somewhere in the dim & distant past, reading that once corrosion has set in that it can't be halted. Could be my memory having me on or a spot of paranoia! I suppose there are 40yr old primatic systems still running out there that have never had inhibitor in them....

 

[jtsplumbing]

Run some Fernox F5 in system for a week , flush out add F1