Hi everyone,

I'm looking to pick up a hermetic compressor for a DIY project, making a vacuum pump for working on my auto A/C.

How do I tell the difference between a compresor that has a permanent oil reservoir and one that uses oil circulating with the refrigerant? I obviously would need one with a oil reservoir for my needs. This is probably a no brainer for you guys but I couldn't find any info on telling the difference between the two. Thanks for any help. Michael