R22 /Or mabey something else?

[546kerry]

Hey,all
I went to work on a rooftop AC on a moter home today.
It lost its charge,found the leak fixed it.Vacumed it out and was ready to charge it.I thought it was a R12 system I looked at the plate it said it was R22.
It is a very simple setup Its a hemetic sealed compresser the kind you would see in a refrigerator runs on 120 volts ac.Its a capillary tube setup.
My problem is I dont have any R22 and dont want to go to the big exspence of buying a 30lb jug of it.
Just wondering what would happen if i charged it with R12 which i do have plenty of that.
Or mabey one of you guys know of something else I can use?

It holds 20 OZ of R22
What can I do If I have to I guess I will get some R22
What would do?

[Senior Tech]

I sure wouldn't put 12 in it...liquid gold...

[rocket]

The lowest price gas on the market is currently R22, that's what you need
try R12 and wind up eating the job

[Dad]

Kerry,

Bite the bullet and get ya a drum of 22, You will need it more and more as time goes by. Like your liquid gold R12 there is no experiation date.