You should convert to R134A... it is much cheaper than the R12... $4
compared to $35 plus professional service charge.
I know you can use Freeze-12... and will cost you $10 a bottle... but it is
up to you.
You must vacuum out all r-12, then use the correct oil prior to recharging
you must also replace the receiver-drier. R-134 works at higher pressure
than r-12, so it is less efficient in systems made for r-12.
R-12 and r-134 are NOT compatible and can NOT be mixed.
r-12 is not as expensive as it was a year ago, there is alot of
Mexican stuff coming across the border, it may be just as cheap to
recharge with the r-12 this time.
Wrong on pressure... R134A is so close to R12... R-12 is preferred at
34PSI... and R134A is at 37PSI... If you call 3 PSI alot, well... you are
Since you are replacing your compressor, make sure you use Ester Oil for
lubricant... follow the instructiont that comes with the compressor... they
should tell you how much you need to add into the compressor before install.
Then you need to create a vacuum on your entire system after you finish
install... usual typical stuff...
Oh by the way, R12 regardless where you get it from, you need license to buy
it or face stiff fine if caught. That is if you are working on your own
Otherwise, like I said, no one give you discount on those R-12 when they can
make that kind of money on it.
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