Does R12 use PAG oil?
R12 systems used mineral oil, but unfortunately mineral oil doesn’t dissolve in R134a. So, along with R134a came a new oil: Polyalkylene Glycol—or PAG oil. The advantage of ester oil is that it works with both R12 as well as R134a, so you can fill the system with it and then use either refrigerant.
How much refrigerant does a R-12 compressor take?
The old R-12 system took 4.25 lbs , so I’m going to start with 3.75 lbs of R-134A But what about the refrigerant oil? My new 134A compressor came with a 3 oz. charge. My original service manual states that the factory compressor should have 10.5 oz of oil.
How much charge does a / C recharge with R12?
If not, you’ve still got a leak, which you haven’t found yet. charge only 80% of the original charge. If the old label said 3lbs R12, then you charge only 2.4lbs R134a, if my math is correct When you’ve got the car idling with the compressor engaged and operating on R134a, suck in some uv dye through the low side port.
Can You charge an R-12 with an oil cannister?
Don’t waste your time with oil charge cannisters, in my experience they don’t work well and it is hard to keep track of how much is going in – you don’t want too much oil. As for hoses, if you had a system that still held an R-12 charge you can probably reuse them but change out the old O-rings for the new green 134 compatible ones.
How much PAG oil do I need for R134a?
So I ordered PAG 46 for R134A oil charge 2 oz. along with a few more quarts of flush to thoroughly clean everything. Should I get enough PAG oil to reach 10 oz .?
The old R-12 system took 4.25 lbs , so I’m going to start with 3.75 lbs of R-134A But what about the refrigerant oil? My new 134A compressor came with a 3 oz. charge. My original service manual states that the factory compressor should have 10.5 oz of oil.
Don’t waste your time with oil charge cannisters, in my experience they don’t work well and it is hard to keep track of how much is going in – you don’t want too much oil. As for hoses, if you had a system that still held an R-12 charge you can probably reuse them but change out the old O-rings for the new green 134 compatible ones.
How much Oil can you put in an A / C compressor?
A/C Compressor Oil Capacities If you are replacing a compressor or other A/C system component, it is important to replace any compressor oil that has been lost when parts are changed. The total system oil capacity for many late model passenger car A/C systems is only about 4 ounces (120 ml).
What kind of oil do you use for a R-1234yf compressor?
Newer vehicles with R-1234yf A/C systems require a special 1234yf compressor oil specified by the vehicle manufacturer. General Motors recommends GM lubricants only (PAG-PSD1 #19260643 for 2013/14 Cadillac XTS, and PAG-ND12 #19299051 for 2013 Cadillac ATS).