It depends on the year of the truck. The old type of freon was phased out. If its an older truck it would have been R-12. But R-12 is not avalible, you will have to convert it to R-134a. Newer trucks are R-134a.
R134a
134a is the refrigerent used
Was built for R12, should be converted to R134a
it takes r134a freon
R134A
FREON USED IS R-12
It does not use Freon as a refrigerant. It uses R134 refrigerant.
2LB. 12OZ.
its probablly r-134-a freon
R134s freon
134a
R134a