"Freon 500"? I can't find any references to it anywhere. Check the product again. As for replacing it, you cannot mix or blend refrigerants, and refrigeration systems are designed for one type of refrigerant - substituting another refrigerant cannot be done without conversion.
Its too old and you'd most likely have to take it to a mechanic to have them drain the old freon, which is illegal to drain yourself due to bad fumes for the atmosphere and they'll replace it with I believe RA12 or something of the sort. If the pump/hose is bad they'll have to replace that too to ensure no problems with the new freon. I'm actually about to do it on my '87 Calais here very soon.
1993-95 for most.
Freon is a trade name. Most use Puron now.
Most likely there is a freon leak or it is empty of freon. If this is not the case then you probably have to replace a sensor that is overloadingas soon as power reaches it.( this usually happens in 2-5 seconds)
freon
depends on the vehicle, but most likely a leak in one of the lines. best idea would be to have the shop replace it, being that on some vehicles it can be -very- difficult.
Freon isn't a single compound, it's a family of related chemicals. Most freons are colorless and odorless.
The freon fill amount is on a sticker on the A/C housing on most vehicles.
The comparative forms of "suitable" are "more suitable" and "less suitable". The superlative forms of "suitable" are "most suitable" and "least suitable".
It depends on the year but in most cases from 1993 and up they will use R134a freon but you can always check the VIN number with the dealer and remember that R134a freon will have larger service ports that R-12 freon............
The most common for vehicles are R-12 and R134a freon.......... The most common for homes are R-22 and R-410A freon..........
replacing freon is only possible if it has been properly been cleaned and recycled back to it's original state - the key to recharging a freon system is first to vacuum the tubes and then when it is in a vacuum - purge the system with nitrogen to rid the system of moisture - maybe twice - to make sure - then either install new freon or reinstall cleaned freon - as the system has failed - most likely due to moisture that has entered the system