Engine Size: 5.7
Refrigerant Type: r12
Country of Origin: United States
factory book says oil charge r4 6oz how much goes where
Brand new system - into the compressor.
Compressor replacement - drain old oil from compressor, add same amount of new oil into compressor.
R12/R134A Retrofit - assuming accumulator/drier has been changed and lines/cond/evap are free of any logged oil, you would drain compressor and add 6oz of new oil to it.
There is no knowledge that is not power
New R4's I put mineral oil in them (couple of oz), let it sit clutch down on bench, drink a beer, turn compressor a few turns, drain oil well, add proper amounr of ester oil. This will lube the seal. IT has worked for me for many years.
New R4s, I install PAG oil mixed with dye- mount compressor drink a beer while vacuum pump runs, charge it and run- never turn it, never worry about double lip seals-- works for me for over 20 years....
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......
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