Quote:
Originally Posted by Willie Makeit
I've read this before and always get a chuckle. Folks are over-concerned that the 2-3 lbs of refrigerant in the AC is flammable, but riding around with 20 gallons (140 lbs) of flammable liquid in the fuel tank doesn't bother them.
<scratches head>
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Because when the engine stops the gasoline is not pressurized and even when running it is at like 2 psi. On an A/C system the high side can be over 200 psi and it doesn't stop having pressure when the engine stops.
Another thing is seals. The blends and/or hydrocarbon refrigerants can be hard on seals. Do what you want, I don't care. But in a full blown A/C job the refrigerant is really a minor part of the cost. What do you save by using off-the-wall refrigerants? Maybe $50? And when you do, no shop will touch it because they don't want to contaminate their machines.