R134a capacity

Tiny
CORY2427
  • MEMBER
  • 2012 VOLKSWAGEN BEETLE
  • 2.5L
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 106,234 MILES
All I can find is different level like 1.20lbs or 18.51 oz or 19.20 oz. What is the correct recharge after replacing condenser and compressor and how much lag oil?
Tuesday, July 20th, 2021 AT 8:50 AM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
What is the reason for replacing the compressor? Was there metal all through the system or did it just fail? If there was metal then you need to flush the system.

Here are a couple guides that help with this issue in general:

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

I am attaching the process below from the manual but it is confusing.

Basically it is telling you that you need to pour the oil from the old compressor so that you can find out how much came out. However, if you are installing a new compressor they want you to flush it with a known amount of oil and measure how much comes out. This will tell you how much oil the compressor is holding so that you can figure out how much to add to the new one.

This frankly, is just not needed. What I would do is basically replace the amount of oil you pour out of the compressor but do not exceed 50% of the total system capacity.

Then just add in another 10% of the total capacity for the condenser replacement.

Please review all the info below on this. Let us know how you make out.

Thanks
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Tuesday, July 20th, 2021 AT 4:02 PM

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