Generally you see how much oil is in your old compressor and add same amount to new one.
You simply hold new compressor over VERY clean cup, and slowly spin it to work/pump oil out hose openings. They ship with 6-8oz. depending on who it comes from.
When I did mine compressor got 4oz., receiver drier got 3.5oz., condenser got 1oz., hose assembly got 1oz.
Make sure to use correct oil PAG46 is what they came with.
When I did mine, I thought I used PAG150, but I'd have to look at receipts. Regardless of that, what I'd suggest, as I did was to install the new oil into the suction port, and slowly turn the pump's pulley to get it into the pump. Just be careful, as it work its way thru, and start to come out the pressure side.
I charged it the 3rd time using the 30lb tank.
2nd time used the small cans. Sure wish I would have checked the new compressor more closely before I installed it. Never assume a new part is good anymore...
If memory serves me correctly, the system take 1Lb 7 ounces (23 Ounces), so it just about takes two of the 12Oz cans you find on the shelves at any store these days.
1. Did you install a new Orifice Tube?
2. Did you install new O-Rings?
After you complete the system install, what I did was draw a vacuum down to 30" of mercury for a few hours (As drawing a vacuum removes any moisture in the system) unplug the pump, and walk away. Go have a beer, or two, or..whatever.
Let the system sit for about an hour, and ensure that you are still holding 30" of vacuum. This is a verification that your system is fully closed.
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