Originally Posted by gainer
So would I. The auto parts dealer who told me this was facing the real-world effects of that reported quality of propylene glycol-- he couldn't sell it. He sold me his last gallon very cheaply because he was not going to stock it any more. The reason he gave was that the garages, gas stations, and others that change anti-freeze for people were having trouble getting the disposal companies they used to dispose of it.
It may well be pure marketing assassination on the part of the ethylene glycol makers, but whatever, it has apparently worked to dissuade dealers from stocking the propylene stuff.
Thanks for the tip about using TEA with the propylene stock; hadn't thought of that.