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

2004 CHEVROLET MONTE CARLO
220,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
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RODJAMES
  • MEMBER
  • 25 POSTS
Refrigerant oil.
Jan 15, 2023 at 4:08 PM
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BORIS K
  • Experienced Mechanic
  • 836 POSTS
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
Jan 15, 2023 at 6:39 PM
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