AC Lube

[Jesda]

I know for R12 systems you need to use a mineral oil. Will universal oil work as well?

Also, do I need to add oil directly to the compressor before installing it or do I just add it through the low-pressure service port?

Thanks!

[Jehangir]

Hey Jesda, I don't know anything about your question. But I just had my ac serviced subsequent to a blown rubber hose on the high pressure side. while you're servicing your compressor you may consider replacing you hoses as well.

[elwesso]

In the service manual it tells you how to add oil, and what type you need. R12 is different from R134..... Thers a flowchart that tells you exactly the amount youll need and how to figure said amount.

[DAEDALUS]

The universal oil is supposed to be compatible with both PAG and mineral. I haven't heard anything bad, but i haven't looked into it either. My AC manual presents it as an option and doesn't mention any downsides. Add it to the service port.

[Q45tech]

DON'T MIX oils make sure you dissassemble and flush out all components and add a new dryer..............chemical reactions occur between old and new types..........compressor seals fail this way.