i use Freeze 12, which is EPA approved for automobiles. http://www.freeze12.com/Frequently%20Asked%20Questions.htm
From: Elijah Scott <imperial1971@xxxxxxxxx>--- Ken Lang <ken@xxxxxxxxxxx> wrote:> I've just found this stuff called HC-12a that is > supposed to be a direct replacement for R12 at about > $6 a can. It can be found at: > http://www.foxtoolsupply.com/ The HC-12a will probably cool fine, but be warned that it is highly FLAMMABLE! Please see the articles below. I've had excellent results in converting my own Imperials to use R-134a. In my experience, it cools equally well as R-12, and is very economical (I buy it by the case at Sam's Club for ~ $2.50 per can). Elijah ------------------------------------------------- "Cheap refrigerants are not worth the risk: An inexpensive substitute could be hazardous." _Fleet Equipment_ 31.7 (July 2005): p10(1). Red Dot Corp. warns commercial vehicle owners to avoid hydrocarbon refrigerants being sold as inexpensive substitutes for HFC-134a and CFC-12. Hydrocarbon refrigerants, marketed under such names as OZ-12, Duracool 12a and HC-12a, may contain large quantities of propane, butane or other highly flammable gases. The EPA says there is insufficient proof that hydrocarbon refrigerants are safe for mobile air conditioning systems, and that leaking air conditioning systems charged with hydrocarbons pose serious risks of fire or explosion under the hood or inside the passenger compartment. "These products are sold online and at flea markets as direct replacements for EPA-approved refrigerants," said Red Dot, which produces heating and air-conditioning systems, components, and replacement parts for commercial trucks, buses, and vehicles used in construction, mining, agriculture, fire and rescue and military service. "Many buyers aren't aware of the potential hazards to themselves and technicians who service their vehicles." \
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