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The right inhibitor to use?

john.culviner
john.culviner Member Posts: 1
in Radiant Heating
So I just finished off doing re-plumbing my 1922 radiator system with PEX (to get rid of those huge cast iron pipes that I hit my head on!) but in the process I had to of course drain the system. I have it all charged and working again but I have not added any inhibitor yet. I came across this stuff locally and thought it would work:

http://www.menards.com/main/heating-cooling/hvac-cleaners/cryo-tek-triple-protection-universal-inhibitor/p-1450143-c-8523.htm?tid=1742123700172662343

My only concern is the "For non aluminum containing boilers only". I have a Triangle Tube Prestige boiler but I'm not sure if it has aluminum in it. Don't want to destroy the boiler of course!

Also could get this locally too, no warning I can see on it: http://parksupplyofamerica.com/product.php?id=FORMULA5QUART&fam=PZLF8T72BBQP&addons=y

What inhibitor do you folks recommend? I'm almost thinking of looking for some stuff that doesn't have a Al boiler warning just in case? Thanks!

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