They should never be mixed.
Only if you're trying to destroy your AC system. Never mix refrigerants.
Why would you want to even consider doing this? R12 is no longer in production and as such it cost almost 4 times as much as R134. But to answer your question, use R12 in a R134 system and you will destroy the compressor as the oil is not compatible with R134 oil.
Should be R134
R12 134A pre 1996 is r12, after is r134
If if it a 1995 or older then it came with R12 installed. 1996 can be R12 or R134. 1997 up, it has R134/R134a. If you suspect it had R12 look for a label somewhere on the A/C unit signifying it has been converted. If you find it has R12 and is leaking and needs repairing, after the leak is repaired, convert it to R134a. R12 is far too expensive to use.
First of all, you don't use R12. Rather, R134 which has the oil included.
This is the transition year. It can be R12 or R134. It is listed on the unit. The fact that R12 is no longer being produced makes it extremely expensive. Convert it to R134.
Unless It Has Been Refitted For R134 It Will Use R12. Best Way To Work This: Have A Good A/C Tech Update To R134 And Test Your System. You Will No Longer Be Able To Get R12 Well Some People Have Some Stashed About ( Cost Is High ) There Is Supposed To Be A Freon That Will Mix With R12 But I Have Heard That It Will Not Cool As Well. Good Luck
It came from the factory with R12. Due to the cost of R12 I suggest you have it converted to run on R134. Have the leak fixed and convert it to R134 and save yourself some big money. R12 is no longer in production, and is very, very, expensive.
R134 _ Well Mine did
It takes R134. R12 is no longer used in vehicles produced around 1990 and newer. Every vechicle from 95 and on uses R134A. Some cars may have even started converting over to r134 as early as 93 but officially EVERY VEHICLE from 95 and on has r134
1993-95 for most.
No , it's R134-a
Yes, it came from the factory with R12. R12 was used up until late 1995. I suggest you convert it over to R134.
It came from the factory with R12. Unless it has already been converted which you will know by a sticker placed somewhere on the system, I would most definitely have it repaired and then converter over to R134. R12 is just too expensive to consider using.
Although less ozone depleting than r12, it's still illegal to discharge r134 into the atmosphere.
Check the ports to add freon--the low side is a large hose --the high pressure is the small line--on the large line if the valve is the large style----the freon is R134--if the valve is the small style it is R12--no longer used --retro valves are available to convert R12 systems to R134 R12 fittings can't be connected to R134 gauges, and vice versa. If it's R12 you won't be able to connect the hose from the supply can to fill it, or do anything else with R134 equipment.
R12 unless it has been converted. I would convert it over to R134 due to the price of R12.
R12 was banned in 1995. Any vehicle from 1994 back will have R12. Any vehicle from 1996 to today will have R134, R134a, etc. A 1995 may have R12 or R134. Any car that has been retrofitted, even if it is older then 1994 may not have R12. If it was retrofitted it should have a label stating this.
If your vehicle is a 1994 or older is contains R12. 1995-96 It man contain R12 or R134. After 1996 it will contain R134. It is listed on a label near the compressor dryer. Engine size means nothing.
You do not want to buy Freon as it is very, very, expensive. Have the leak repaired, the system purged of all Freon R12 and the oil. Have it converted over to R134 refrigerant. You cannot just add R134 as the oil used in R12 is not compatible with R134. You will be money ahead by converting it.