My AC compressor crapped out. I have a new Behr compressor coming. I have a vacuum pump. I have a new dessicant for the drier in the condenser unit. I've got R134a. I've got PAG46 and I've got 4-way AC guages.

I think my parts list is complete to get this AC swap done. But I have no idea how much PAG46 I'm supposed to use!

I know I'm supposed to measure how much oil comes out of the old compressor and put that amount in the new one.

But I also know there's some in the receiver drier that I'm replacing. I can't find how much to add to compensate for new dessicant in the drier?

Also, I plan to pull vacuum on the AC system to do a proper refill especially given how humid Florida is right now. Does pulling vacuum suck any oil out of the system I need to compensate for as well?

I haven't done an AC system since my Camaro's R134a conversion back in 2001, so I don't really remember anything about it and learning from scratch.

Thanks! :-)

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2006 BMW X5, 3.0i - 161,000 miles
2003 Ford Mustang GT - because having Two cars that keep dying seemed more exciting.