Posted by Harold Kestenholz - Hydronic Network on February 05, 2000 at 11:46:57:
In Reply to: HERGOM L08 COOKER - LEAKY BOILER!! posted by David Palmer (SCOTLAND - Aberdeenshire) on February 05, 2000 at 06:54:43:
There is no "safe" compund to put into a system. Anything that can stop a leak also can stop circulators and block valves. Automobiles use a sealer in some antifreeze that expands and sets in contact with air when it reaches the leaking point, somewhat like white blood cells at a skin tear. But ethylene glycol auto antifreeze is also poisonous. The old leak-stops like oatmeal and pepper do the job, but are very prone to clogging the system. Schedule a boiler replacement for the first warm day.
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