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#1
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R-12 substitute
Has anyone used the "Freeze-12" product and if so will it mix with R-12?There is a shop in Hunsville, TX that said they were licensed by the company as an exclusive installer.
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#2
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Freeze-12
Hi there,
Most all the R-12 substitues are a blend of butane and propane, in a percentage to produce approximately the same cooling effect as R-12. They work fine as long as there's no leak in the system. They are compatible with both mineral and PAG oils. (I don't have personal experience with the PAG oils, however, just repeating what I've read.) They are actually more efficient at cooling than R-12 is. The problem is that the system MUST be labled that there is an R-12 substitute in the system. Failure to do so is against the law! Also, if there is a leak in the system, (and there almost ALWAYS is,) the percentage of butane and propane will change, and then the system won't work as designed after awhile when one of the gasses leaks out in a greater percentage than the other. Interestingly enough, these gasses are used in many countries around the world instead of R-12, completely legally. They are environmentally friendly, even when leaked into the atmosphere. There is a slight danger of fire if they leak into the engine compartment in a large volume, but no worse than a can of hair spray. If one uses them be aware that the liquid volume of these gasses is much different than R-12 - it takes much less to fill the system. If I remember correctly, it's on the order of 1/3 the quantity by weight. Don't try to mix butane and propane to approximate the same thing, as the substitutes like Freeze-12 have been filtered and more water has been removed from the gases. Using regular butane and propane may rust out the AC system from the inside out. I am personally aware of a Jag that has been using this stuff for 7 yrs now with no ill effects... I'm sure that others will have plenty to comment on regarding this subject. Regards.
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Richard Wooldridge '01 ML320 '82 300D 4.3L V6/T700R4 conversion '82 380SL, '86 560SL engine/trans. installed '79 450SL, digital servo update '75 280C |
#3
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I am a hvac 15 yr service tech I have it in my 85 500sel works great.I would
recomend it |
#4
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freez 12
The freez 12 works even beter in my opinion.I allso run it in my 90 420sel,cools very well.just-n-time
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#5
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Quote:
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- Brian 1989 500SEL Euro 1966 250SE Cabriolet 1958 BMW Isetta 600 |
#6
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Get your 609 certification to buy and use the real stuff. FREON R-12. Nothing is better. Its not that difficult to get it.
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche |
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