* Specific model of Explorer: Different trim levels and engine sizes might have slightly different system capacities.
* Condition of the system: Leaks will reduce the required amount. If there's a leak, adding refrigerant is only a temporary fix. You *must* find and repair the leak first.
* Type of compressor: The compressor type influences the refrigerant capacity.
Therefore, it's absolutely crucial to consult your vehicle's owner's manual. It should list the correct refrigerant capacity for your specific 1993 Ford Explorer.
If the owner's manual is unavailable:
* Find a reputable automotive repair shop or AC specialist: They have the equipment to properly evacuate the system, check for leaks, and charge it with the correct amount of refrigerant. They'll also likely add the correct amount of PAG oil, which is essential for compressor lubrication. Improperly adding refrigerant can damage the compressor.
* Use an AC charging guide: Some guides exist for specific vehicles, but ensure it's accurate for your exact year, make, model, and engine. However, even with a guide, professional equipment and knowledge are still highly recommended to avoid damage to the system.
Never attempt to add refrigerant without proper training and equipment. Refrigerant is under high pressure and improper handling can cause serious injury. The system needs to be properly vacuumed before adding refrigerant to remove moisture and air.
