2002 Yukon xl Air condition freon filling

[Abuumar]

2002 Yukon xl Air condition freon is 42oz (1.36kg) is showing in the catalogue. But said it's an old truck so should not refill as same mentioned. Fill 1.2kg max and leave 160gm as empty, because compressor is old.

The other thing if I refill freon how much oil I should add, for a new compressor it's 11oz(330ml).but I am not changing the compressor, just filling the gas. So 5-8 ml oil is enough or it's more?

Likewise PAC 46 or POE oil which one can add..? I don't know which is earlier in it! Because I purchased the car recently

Please support, if someone has proper knowledge on it

 

[SnowDrifter]

I say this with all the love in the world

Should probably leave this one to the pros. Or, their machine, as it were