a/c system
#2
People I know have converted their Mazda trucks systems successfully to R134a. Note that the R-12 type "mineral" oil must be removed, not so easy.
I suspect that you have/had a leak of refrigerant, why you are considering changing. I'm in Arizona, installed a new compressor myself in my 1988 B2200 last October, stayed R-12. The higher cost of R-12 is offset by the simplicity of not changing over. If you haven't fixed your leak, then you're throwing your money away either way, as refrigerant is not a consumed item (I've got a '98 Frontier with 201K that's still on its original refrigerant).
I suspect that you have/had a leak of refrigerant, why you are considering changing. I'm in Arizona, installed a new compressor myself in my 1988 B2200 last October, stayed R-12. The higher cost of R-12 is offset by the simplicity of not changing over. If you haven't fixed your leak, then you're throwing your money away either way, as refrigerant is not a consumed item (I've got a '98 Frontier with 201K that's still on its original refrigerant).
#3
I've talked with a guy i work with and he has all the equipment needed to evacuate, flush and test before adding r134. I should be able to save over $100 from having a shop do it, besides i don't know where to get r12 nor do i have the permit to get it.
#4
One can buy R-12 on Ebay. Some vendors will require the certificate, about $25 online.
Just don't add anything with sealers or leak stop, you'll ruin the system. A little UV-dye is OK. That guy sounds like he knows what he's doing if he can flush the system. He may not do R-12 because he has little call for it so doesn't have the legally-required separate recovery/fill equipment.
Just don't add anything with sealers or leak stop, you'll ruin the system. A little UV-dye is OK. That guy sounds like he knows what he's doing if he can flush the system. He may not do R-12 because he has little call for it so doesn't have the legally-required separate recovery/fill equipment.
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Shawn Element
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