1995-1996 depending on the exact date of manufacture.
R12
All cars have a valve like a tire valve you just plug into to recharge. You can buy a can of r12 at any auto parts store and instructions will be on can.
Was built for R12, can be converted to R134a
1997 =============================================================== I know that my 1993 Ford Explorer took R12 , but my 1995 takes R134a
The only legal way is with a R12 recovery/recycling machine.The only legal way is with a R12 recovery/recycling machine.
It would have been built with R12, can be converted to R134a.
The simple way is to remove the R12 and install R134A. by a kit with that will have a hose, R134A with oil. The new oil may plug your leaks. or go to Mexico and cross the border and buy R12 in 12 oz cans The border guards may take your R12 cans when you come into USA. or Drive your car into Mexico and have them fill your system with R12.
1995 was the open model faze out. Caddy started in 1993.
Generally speaking that is the "R12 Freon" used in the air conditioning up until around 1995. After that R134 and R134a is used.
No. They use R22 or R410A. Cars use R12 (before 1993) and R134A (after 1993). You cannot mix them together.
Your 92' Geo probably uses R12 freon, but since they don't sell that to just anybody in stores they will probably want to sell you R134 freon. I recommend that you just take it to somebody who has an air conditioning license that way he can get you the R12 that it needs. I wouldn't put R134 in your air conditioning system because it might harm it. Plus R12 is very expensive now a days since they don't make R12 systems for cars anymore cause it pollutes the atmosphere, but to tell you the truth it cools alot better than R134. R134 is sort of like the replacement of R12. A can of R12 can cost up to $30, and most cars need around 2 or 2 1/2 cans.
1995, was the last year for most cars. Anything 96 and newer uses R134a.