A/C compressor oil capacity

2004 CHEVROLET MONTE CARLO

209,056 MILES • 3.8L • 6 CYL • 4WD • AUTOMATIC

JASH7669

MEMBER
1 POST

I just took out the old A/C compressor and on the new one it say it's pre-charged with 3 ounces of oil but also says must add recommend amount. How much more do I need to add?

Aug 14, 2021 at 6:01 PM

KASEKENNY

✓ASE Certified Mechanic
18,907 POSTS

This is called oil balancing. Basically they pre load it with 3 ounces and then you need to fill the remaining based on how much you pour out of the old one. So if you pour out 3.5 ounces then you need to add another half ounce.

Here are a couple guides that help with replacing a compressor if you need it:

https://www.2carpros.com/articles/replace-air-conditioner-compressor

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Please see the attached info below for the detail on how to do all this.

Let us know if you have other questions.

Thanks

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Aug 14, 2021 at 7:02 PM