There is a lot of differences between the R12 and the R134a fittings, you can’t mistake them. Yes, you can accidently fill a converted R134a system with R12, only if they left the R12 fittings on it. The fittings themself are so far apart from the function and operation, one will not interchange with the other.

Similarly, you may ask, is r12 the same as r134a?

R12 and 134a are refrigerants used in car air conditioning systems. R12 was used in most cars and trucks until 1995 when it was replaced with 134a. The main difference between the two is that R12 is the amount of time they remain in earth’s atmosphere, with the newer 134a significantly less than the old R12.

Likewise, how can you tell if you have r12 or r134a? R12 fittings look like a tire valve stem, with threads on the outside. R134a fittings look like a air hose ‘quick connect’ fitting.

In this manner, is r134 compatible with r12?

The oils are different and not compatible and can cause an explosion. R134a is also a smaller molecule than r12 so if you HAD a small leak with r12 that you did not fix you have an even bigger leak now. R134a is so much smaller than r12 that it will leak right through the older hoses used for r12.

How do I change r12 to r134a?

How to Convert an R12 to the R134a System

  1. Discard any R12 refrigerant still in the system by taking your vehicle to a licensed air-conditioning professional.
  2. Open the engine compartment of your vehicle.
  3. Push the high side retrofit R134a fitting over the old fitting and use a wrench to tighten it.

Related Question Answers

Can you still buy r12?

R12 is difficult to find now a days. It was phased out all the way back in 1994 and was replaced with R-134a. There are very few places where you can actively buy R-12 today.

Can you still use r12 refrigerant?

R12 Replacement for the Vehicles

In most of the vehicles, the air conditioners use the R12 refrigerant, which is now getting difficult to get and expensive. For vehicles also the most appropriate alternative is R-134a refrigerant. It has been approved by all the vehicle manufacturers for replacing the R12 refrigerant.

When did they stop using r12?

The year was 1993. In 1994 R134A was implemented. Car manufacturer’s starting using R134A in 1994 on vehicles sold in the USA. R12 refrigerant was still used because stock piles were made in anticipation of the stop of production.

Can I use r12a instead of 134a?

Like college man stated supposedly R12a is compatible with your car if all the 134a has been evacuated. I never used R12a …But, the mixture consists of approx. 40% butane, 59% propane and 1% ethane. If you have a leak in the evaporator and that stuff goes into the cabin of the vehicle….

Can a car lose Freon without a leak?

Refrigerant gas does not “wear out” like oil nor is it used up like fuel. In a properly sealed system the gas can continue being compressed and released over and over, so long as it doesn’t leak out.

What is the coldest freon for cars?

Interdynamics Artic Automotive Refrigerant R-134a

This state-of-the-art Freon freezes like the North Pole due to its advanced QwikBoost chemistry, meaning that you’ll get colder air up to 50% faster.

Can you mix r12a with r12?

R12a is a “drop in” replacement for R12, but IS NOT the same. It is a mix if different refrigerants (sometimes propane, hence the flammable concern) that will work in a system designed for R12. If your system just needs a top off charge of a few oz.

Can you mix red Tek 12a with 134a?

Significantly less product is used to complete the same function. SYSTEM COMPATIBILITY: RED TEK® 12a is compatible will R12 or R134a systems including: Metal components.

Can you mix r12 with r22?

R12 and R22 do mix.

What is a drop in replacement for r12?

RS-24 is a “Drop-in” alternative for R12 which also provides a long term solution at the same time. It provides, therefore, a one change solution to the replacement of R12 at minimal expense.

What happens if you mix freon?

When an alternative refrigerant is mixed with R-22, there is no pressure-temperature chart to refer to and therefore no way to optimize the system charge. Improper superheat or subcooling can lead to compressor floodback, overheating, and dramatically reduce system efficiency and compressor lifetime.

Can I use PAG 100 instead of PAG 46?

But their use is a recipe for potential problems. There is a difference in the viscosity (thickness) of PAG 46, PAG 100 and PAG 150. Plus, using anything other than the specified viscosity of PAG oil in systems that require it voids the warranty from many of those compressor manufacturers.

Can I replace r22 with r134a?

R134a refrigerant is an alternative that contains no chlorine and hence no ozone depletion potential. It’s a greenhouse gas, though, and it doesn’t work as well as R22.

Can AutoZone recharge AC?

When it’s time for an AC recharge, turn to AutoZone. We carry R134a refrigerant, PAG46 oil, AC stop leak, AC system cleaner, and more. You can shop online for same day in-store pick up or go to your local AutoZone to find the right AC solution for you and your vehicle.

What pressure should 134a run at?

For the normal running pressure in an R134A system, the coil should run at 22 pounds per square inch at the lowest temperature, 45−20 = 25 degrees Fahrenheit. Similarly, at the highest temperature, 60−20 = 40 degrees Fahrenheit, the coil should run at 57 psi.