A/C pump oil

2017 MITSUBISHI MIRAGE
93,000 MILES • 1.2L • 3 CYL • 2WD • AUTOMATIC
Avatar
STEVEN MITCHELL
  • MEMBER
  • 2 POSTS
A/C line cut. I'm replacing the line, purging and recharging the system. I need to know how much oil the A/C pump needs. I don't know if it can blow oil out of the low pressure side but I want to check just to make sure.
Dec 5, 2020 at 11:24 AM
Advertisement
Avatar
KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
If you are only replacing a line, you do not need to put oil back in. The only time you put oil back in is when you replace a component.

Here is a guide on recharging just in case you need it:

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

If you want to put some oil in it, just drain the line into a cup and measure how much it is. However, I doubt you will get a tablespoon out of it.

Let us know if you have other questions. Thanks
Dec 5, 2020 at 7:00 PM
Avatar
STEVEN MITCHELL
  • MEMBER
  • 2 POSTS
Thanks so much. I've kind of been sweating this because I can't manage to find any info on the pump. This helps tremendously.
Dec 5, 2020 at 7:11 PM
Avatar
KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
You are welcome. Yeah, the oil pretty much stays in all the components like the compressor and dryer so there is not much in the lines. You will be just fine as long as you evacuate it and pull it into a vacuum for at least an hour. That will make sure all the moisture is out and there are no leaks. Moisture in the system is what does in compressor pretty quick.

Thanks for using 2CarPros. Come back next time you have a question. Thanks
Dec 5, 2020 at 7:24 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.