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If you mix r12 with r134 air conditioning system, it will cause a high pressure in your airconditioning system and eventually damage the compressor and the evaporator. R12 is only for r12 aircon and something with r134, it can't be mix.
No, if you mix them they will form a gel and ruin the compressor. You will have to have the system evacuated and replaced with the new refrigerant.
Only if you're trying to destroy your AC system. Never mix refrigerants.
no u can not mix the 2 togather it wil ruin the hvac system
No, you cannot.
no you can't. you must have the r12 removed and compressor oil then the valves need to have adapters installed so you can recharge the system no, but there are replacement freons (hot shot 414B) that can be added safely, after you empty the r12, and perform as the 12 did
The same amount is used as an R12 system.
They should never be mixed.
It is not recommended.
An R12 system must be retrofitted to be made compatible with R-134a.
Yes. R12 and R134a are essentially the same thing. The reason for a new type being produced was that the company owning the rights to the mix lost its patent. Thus they needed a new one but could not use the same name or exact same mix. So they changed very little about it and came out with R134a. There is basically no difference in them.
no