AC R12 Maybe R22

[Riverfurm]

Well I got my 86 Golf diesel last fall and the AC did not work, I did not have much use for it through the fall and winter. But Now the weather is getting warmer I want AC. I checked the system out and found a line loose at the compressor. Tighten the line and evac. the system.
  Well I was going to recharge with R12 (yes I can still get it and yes I know I can convert it to R134a) but I remebered I had a 30lbs container of R22. So what the heck I charged it with R22 and it blew cold air.

What's the difference between R12 and R22 when you use it in an automotive system? Has anyone tried this before?

Thanks

[QuickTD]

From the handbook of chemistry and physics 56th edition (a good read BTW)

 The boiling points of R22 and R12 are different, R22 boils at -41C, R12 at -29C. R22 has a higher heat of vaporization and higher specific heat, making it a slightly better refrigerant. Critical temperature, the temperature at which the refrigerant will no longer liquify under pressure, is slightly lower with R22 (96C vs 112C) and the critical pressure is higher for R22 (49.1atm vs 40.6atm).

[MacGyver]

From the handbook of chemistry and physics 56th edition (a good read BTW)

Good lord...is there anything you DON'T have a reference for...?

[QuickTD]

Good lord...is there anything you DON'T have a reference for...?  

Given the extremely broad range of devices that I'm asked to build or repair daily, it's handy to know EVERYTHING!

 The "handbook" should be on everyones shelf, better make it a stout shelf though, "handbook" is a bit of a stretch. That sucker's a good 10 pounds...

[GypsyR]

R22 eats rubber hoses and seals. If you take apart an R22 airconditioner or appliance you'll note there are no rubber hoses in any of them.
R22 will  work, sure. You've already found that out. How long until a hose fails? I don't really know but you'll find out sooner or later.

[AAZJetta]

Freeze 12 worked great for me