("nrp" wrote)
[snips fron two different posts]
I now use a little yellow can Heet in the winter and don't fly in below
zero (F) temps.

I add a couple of tablespoons full of yellow can (isopropyl) HEET every
now and then when the temps drop below freezing.


I was always told to use ONLY the (red) Iso-HEET in my car. This goes back
to the early 80's. Consequently, even though it's usually half the price I
never buy the (yellow) stuff.

http://www.goldeagle.com/heet/products.htm

http://www.goldeagle.com/heet/faqs_heet.asp
(Yellow) ..."HEET contains special additives and methanol."
(Red) ......."Iso-HEET contains isopropanol and a special additive."


Montblack