I converted the GV to r134a and it was never very cold; I was told some older cars just don't work well with the conversion. I bought a bunch of R12 off C/L and had my cousin install it and that fixed it. In reality, the r12 was not much more than the newer r134a.
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Two 1975 455 Grandvilles &
'79 455 Trans Am
‘69 Camaro SS 396/375 (owned since ‘88)
‘67 Corvette 427/435
‘23 Lexus LS500 awd
‘20 Audi R8 & ‘25 Toyota RAV4 (wife’s cars)
‘95 Ford F250 4wd 7.3 p-stroke
& countless Jeeps & off road vehicles & motorcycles
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