Usually if there is any color other than black it is 134a. Remove the caps, if there are threads on the outside it is R12, no threads but a large groove it is R134a. HTH.

__________________
Retired
ASE Master Car / Light Truck
ASE Master Medium Heavy Truck
EVT Master Technician Ambulance
EVT Master Technician Fire Apparatus

"Without Fleet The Pride Doesn't Ride"

1983 300SD 609K + still going strong!
1970 Monte Carlo
1994 Ford F150