How much PAG oil in a new A/C system?

JackJ217

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I’m replacing the whole AC system in my 87 f250, but I can’t seem to find any good info on the amount of oil to add (and where to add it) as well as how much charge to put in it. New compressor (3 oz of oil already in it), evap core, dryer, condenser and lines. Everything from rockauto, besides the condenser which came from LMC.
I can charge the system at work the right way once the truck is back on the road, so for now I just need to figure out how much oil to add to it. R134a of course.
 

Nero

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8oz oil total 2.7lbs 134a
 
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