How much and where to add PAG oil..

[DetroitIron]

I have replaced my entire AC system with new stock components and added a high pressure cut out solenoid....before drawing a vacumn and charging, I need to know many oz of PAG oil to add and whether it all goes in the compressor or??? Thanks,

[Edahall]

Originally Posted by DetroitIron

I have replaced my entire AC system with new stock components and added a high pressure cut out solenoid....before drawing a vacumn and charging, I need to know many oz of PAG oil to add and whether it all goes in the compressor or??? Thanks,

Is your A/C system entirely free of oil? If so, refer to the following for the correct amount of oil to use.
http://www.napabeltshose.com/downloa...s&view=napa_hc
Assuming your truck has an A6 compressor, you'll need 10 oz of PAG oil. This is also assuming that the A/C system has been properly cleaned, and new accumulator / filter drier has been installed.

Add about half the oil to the compressor and the other half to the drier.

I hope you're not using one of those vacuum machines that hooks up to an air compressor.

Send me a PM if you're interested in a common off the shelf refrigerant that works better than R12 and less costly than R134a. IMO, R134a was a step backwards from R12.