Well I for one have never tired to use one as an air compressor!
But I say got ahead an try it, and let us know it works.
Jim the 05G's have an oil sump too. But it is the same oil that is in the refrigerant also. So it may work like yer old Yorks.
Scott if ya want you could donate it also. I have had several donated in the past an I pass them on to a busnut when needed.
Last one went to a busnut who'd never heard of the boards and didn't even own a computer. He an his wife were both on SSI & Disability and "livin' large" and would travel when & where ever they got the urge until they had exhausted their monthly funds and then they would camp out until the next infusion. (they said they had an emergency fund, but hated to & hardly touched it unless it was a dire emergency!)
I just happened to run across them near by our place hanging out until the sun went down. And when my dogs an I met them and started talking to them I found out their A/C compressor had failed.
So I told them I thought I had one @ my shop that was given to me they could have if it would help.
You'd thought I'd just handed them a mega lottery check!
They followed us back to the shop and he changed it out in less than an hr with what little help he'd let me offer and all that consisted of was I got to lift the old one out, and the "new" one back in for him.
The had plenty of freon stored in the receiver tank and once he fired it up it started blowing cold. They both gave me hugs, and the dogs kisses & treats! And off they drove into the sunset!
The one before that one went to one of our very own here on the board.
So you just may find someone in need some day.