A/C not cooling, how much PAG 46 oil does the A/C need?

LENA RYAN

MEMBER
2010 LINCOLN MKZ
5.0L
6 CYL
2WD
AUTOMATIC
134,000 MILES

The A/C is not putting out cold air and would not take any more Freon. So, the plan is to vacuum and recharge, the R134 oil checker shows it needs more pag 46 oil, my question is how much?

Sunday, September 11th, 2022 AT 6:46 PM

1 Reply

JACOBANDNICKOLAS

MECHANIC
108,170 POSTS

Hi,

As far as the PAG oil, I attached the specifications below. However, if the system is fully charged, you should be getting cold air unless something different happened.

When the A/C is on, do you hear the compressor engage? Also, have you checked the blend air door actuator in the vehicle to make sure it is working?

Let me know. Here is a link you may find helpful:

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Take care,

Joe

See pic below.

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