Originally posted by zhandax
At times like this, you really gotta ask yourself,
Do I smoke?
Seriously, the car does carry 20 gals of flammable fuel, but it is liquid and has little risk of leaking into the passenger compartment since the gas lines run under the car and gas fumes are heavier than air.
I understand propane is an excellent refrigerant, but I smoke like a '63 chrysler.
Mostly in the car, where there is a potential for a leak inside the passenger compartment.
For this reason, I have eliminated propane-derived substitutes from my list of acceptable refrigerants.
One of the guys at work tried Freeze12, swore it was not flamable, and was pleased by the results. He sold the car 3 months later; so much for an unbiased long-term test.
I found to my shock that the 300E I recently bought has a working A/C with R12. Freeze12 is probably what I will try before I convert to R134 if it passes the bic test (light my bic, spray some of this stuff on it, if it does not burn, it goes in).
I would not worry too much about the long-term effects of alternative refigerant on the system since, when it craps out, your choices are
1) Rebuild it with that tank of R12 you stashed in the garage 10 years ago, or
2)Convert to R134.
You will replace the expansion valve and drier in any case, and the change in oils means you will probably be rebuilding/replacing the compressor within a year or so after change-over due to seal deterioriation. At least that is the way all the conversions I have driven have turned out.
May the force be with you...
Hey . . . You can play WHAT IF . . . ALL DAY ! ! !
There are a couple IDIOTS who had a shop about 12 miles fro me that got popped for charging car A/C units with Butane . . . They're now finishing up 10 years in the State Pen for being IDIOTS ! ! !
Some SHADE-TREE DUFUS in Texas was charging car A/C units with a propellant that some friend of his was stealing from the plant where he worked . . . One of the cars he charged with this stuff had a leak which filled their garage with FLAMMABLE fumes, which the hot water heater ignited . . . They found the GARAGE DOOR 3 blocks away ! ! !
Granted, the car does carry gallons of FLAMMABLE liquid . . . but it does so in a FUEL TANK that was ENGINEERED to do so. NOT an A/C SYSTEM that is charged with a substance it was NOT DESIGNED to operate with . . .
Ya . . . you can cure hemorrhoids with dynamite . . . but the damage it does makes it a moot point . . .