What type of ac charging fluid does a 1990 Isuzu trooper take?

The 1990 Isuzu Trooper typically uses R-12 refrigerant for its air conditioning system. However, many owners have converted their systems to use R-134a due to R-12's phase-out. If converting, it's essential to ensure the system is properly retrofitted and compatible components are used. Always refer to the vehicle’s service manual for specific details and recommendations.