How can I tell how much pag 46 oil is in my car or if my system is properly lubricated?

Hello,

It is not easy to determine the quantity of oil in the AC system. Most of the oil is stored in the compressor. There are no dipstick or sight glass

How A/C works:
https://www.2carpros.com/articles/how-a-car-air-conditioner-works

I found a special tool which seems to make the checking process easier:
https://youtu.be/pSLTB2XIXK0
and
https://youtu.be/uI5x7VPpvVY

See image below.

Hope this helps.

Cheers, Boris