I MOVED INTO A NEW HOUSE IN JAN THIS YEAR , INTENDED TO DO A FLUSH AND REFIL OF THE SYSTEM , THERE ARE NO PROBLEMS WITH IT AT THE MOMONT, A STICKER ON THE BOILER READS FERNOX MB10 COROSION PROFER NO REPLACEMENT NEEDED. IS THIS STUFF AS GOOD AS IT SAYS, I DONT KNOW WEN IS WAS PUT IN. CHEERS LEE
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