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[omega3000]

Fernox , its not cheap is it or am i looking at the wrong place . B&Q dont seem to stock it .

http://www.screwfix.com/p/fernox-heavy-duty-central-heating-cleaner-500ml/51463

[fiend61]

here you go 


http://www.diy.com/nav/fix/plumbing/plumbing-supplies/central_heating_chemicals/-specificproducttype-corrosion_proofer/Fernox-MB1-Corrosion-Proofer-9271221

yes expensive but the best out there "you get what you pay for " 

[fiend61]

oooppps forget that link 
thats for corrosion protection 

but fernox is the best 

[omega3000]

So this stuffs no good then



 

[martin42]

thats the right stuff 
can get it from screwfix

[omega3000]

thats the right stuff 

Just seen some central heating cleaning stuff at B&Q but its not fernox but it is cheaper .http://www.diy.com/nav/fix/plumbing/plumbing-supplies/central_heating_chemicals/PlumbSure-Central-Heating-Cleaner-11478253

Need to get my shopping shoes on 

[martin42]

that should be fine 

[Andy B]

Is this the longest rad flush thread in the world? 

[omega3000]

Is this the longest rad flush thread in the world? 

  Just making sure ...will sign off now   

[hotel21]

Is this the longest rad flush thread in the world? 

Possibly would be if it had been started by Carlsberg.....   

[Andy B]

Is this the longest rad flush thread in the world? 

Possibly would be if it had been started by Carlsberg.....   

that's an idea ........... maybe flush using Carlsberg!! 

[fiend61]

that's an idea ........... maybe flush using Carlsberg!! 

breathalysed for fun with the fumes coming off the car 

[Andy H]

Do you have any indication of what material might be causing the blockage?

Oil cooler failures result in lots of oil being distributed around the system.

General neglect (including repeated topping up with tap water instead of fitting a new HBV) results in calcium and corrosion products blocking the system.

If you need to shift oil then use a non-foaming detergent (eg traffic film remover).

If you need to shift calcium or corrosion then consider using a flushing solution but be aware that the active ingredient is an acid. It attacks scale (calcium and corrosion) first but will attack clean metal too.

If you are not sure which you need then try a detergent flush first as it won't do any harm (and it will make a later acid flush more effective too )

[omega3000]

Do you have any indication of what material might be causing the blockage?

Oil cooler failures result in lots of oil being distributed around the system.

General neglect (including repeated topping up with tap water instead of fitting a new HBV) results in calcium and corrosion products blocking the system.

If you need to shift oil then use a non-foaming detergent (eg traffic film remover).

If you need to shift calcium or corrosion then consider using a flushing solution but be aware that the active ingredient is an acid. It attacks scale (calcium and corrosion) first but will attack clean metal too.

If you are not sure which you need then try a detergent flush first as it won't do any harm (and it will make a later acid flush more effective too )

I changed the HBV last month and no problems there , no oil in water its always been clean . Overheating problems were for a few weeks till i flushed the system then it overheated one more time but think that was air in the system and its only had to be topped up once since so guess thats it settled down now . Temp sits at 95=96 and sometimes rises to 97-98 then the fan cuts in , no leaks ..im just going to flush a few more times using the said cleaners and see how it goes . I would say most of the stuff in the system is limescale as thats what seemed to come out the last time i flushed it , just probably never left it long enough to thoroughly penetrate the whole rad