Questions on swapping my VA compressor & re-charging

[anguilla1980]

I swapped my bare aluminum v-belt Sanden compressor for a black 8-rib one from CVF last fall and I'm just now getting around to charging it. CVF said it came with 6.75oz of PAG 100 oil inside. VintageAir takes 28.8oz (1.8lbs) of R134A. I'll be renting the equipment from my local auto parts store to properly pull vacuum on the system and charge it, and buying the cans of R134A from them.



My question; it sounds like I need to add no oil to the system and I can just use straight R134A. Is that right, or will pulling the vacuum on the system for all that time remove some of the oil? I'm not sure if as the moisture sublimates of any oil would be drawn out by the suction or if I'll be good.

Also, is there a chance of having too much oil now with what's already leftover in my system combined with the charge of the new compressor? Or is that not a great concern?


It sounds like everything will balance out ok in the end but I just wanted to check with the experts on here.

Thanks!