With a refrigerant id tester. Go to a service center and have them perform a refrigerant purity test. Many R12 to R134a conversions did not actually have a complete conversion done, as the full conversion was very expensive, and one could get by with replacing some fittings and the compressor oil. Thus, the R12 schrader valves were often retained on these converted systems.
R134 .... IS freon.
R134
R134
To convert an R12 system to R134 all of the R12 will have to be removed. The system will have to be completely flushed out then special additives installed. This is done due to the way the different Freon's react to the systems gaskets. After this is done then the system is ready to be set up with new Freon.
THERE IS NO FREON IN A 98 IT IS R134
They should never be mixed.
1993-95 for most.
R134
R134
R134
Should be R134 if it is 1993 or newer if older should be converted to R134
Same thing