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Q: What are normal R12 operating pressures?
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What other refrigerant besides R12 can be used on a 1988 Toyota Camry?

No. R12 systems are designed for R12. The lubricating oil for 134a is synthetic and will attack the o-rings in a R12 system. I think the operating pressures are also different.Samething is now happening to residential ACs. R22 is out and 410 is in.They are not compatible.SOL


What are normal R22 operating pressures?

The pressures depend on the temperatures so it is not possible to give "normal" temperatures. The pressures change with the outdoor and indoor temperatures. You need to be EPA certified to attach gauges to the unit to check the pressures.


What should the high and low pressures be for r12 refrigerant on a freezer?

450 psi / 35 psi


Can you charge your AC with R12 freon yourself?

You have to have a permit to buy R12 and it is very expensive. Any system that uses R12 can use 134 the replacement for R12. You will need adapters that screw onto the old fittings that accept the hose that hooks to the 134 can. You add freon to the low side of the system. The adapter are different sizes so you cannot put it in the high pressure side. Yes, if you have any mechanical knowledge at all, you should be able to charge the system without much trouble. OR you can buy all the R12 you like for cheap from Mexican sources and keep the longevity of your original equipment and lower operating pressures of R12. They way your system was designed. R12 comes in everyday by the truckload thanks to our new open border laws.


Is r12 r22 compatible?

No it's not. R22 is designed for use in home HVAC systems where as R12 is intended for automotive systems. Using R22 in an automobile will cause swelling of seals and hoses, possible compressor failure due to different running pressures.


Is R12 Compatible with R22?

No it's not. R22 is designed for use in home HVAC systems where as R12 is intended for automotive systems. Using R22 in an automobile will cause swelling of seals and hoses, possible compressor failure due to different running pressures.


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the normal operating temperature for cars is around 190 degrees.


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How much freon do i put in a 1987 corvette that's been retrofitted?

When retrofitting a system with R134a refrigerant that was originally R12, it usually takes just a little less R134a than the original R12 did. Look for the sticker in the engine compartment or consult the owners manual for the original amount of R12 the system took. Then recharge with a few ounces less of the R134a. Also monitor the pressures during the process for reference.