[JasonB]

Not sure, but it should be in big bold letters across the a/c compressor on top of the engine.

 

[Ian_Wallace]

I think it's R-134A. I'm pretty sure all auto companies were forced to switch over in '93 or '94.

 

[HotRodDaddy]

it should be r134

 

[WMIF]

I would also say R-134a, but it should say. also the fitting to charge the system will only fit one or the other. they did it purposely so the 2 cant be confused.