2016 Ford F-250 Super Duty: A/C Refrigerant & Oil Guide

Quick Answer

For the 2016 model year, the Ford F-250 Super Duty uses the older R-134a refrigerant. Key specifications are as follows:

• Refrigerant Type: R-134a
• Full System Charge: 42 oz (1190g)
• PAG Oil Type: PAG 46
• PAG Oil Amount: 7 oz (207 mL)
• Low-Side Service Port Location: Near the passenger-side firewall.
• High-Side Service Port Location: In front of the passenger-side fender well, near the radiator support.

Why R-1234yf Matters

While your 2016 F-250 uses R-134a, it's important to be aware of the newer R-1234yf refrigerant standard. Starting around the 2014 model year, vehicle manufacturers began transitioning to R-1234yf to meet stricter EPA environmental standards. It has a much lower Global Warming Potential (GWP) than R-134a.

For vehicle owners, this means:

• Higher Cost: R-1234yf is significantly more expensive than R-134a.
• Different Equipment: Servicing R-1234yf systems requires a dedicated, SAE-certified recovery and charging machine. Cross-contamination is a major concern, so shops must use separate equipment for each refrigerant type.
• Flammability: R-1234yf is mildly flammable, which has led to new service procedures and component designs.

If you own a newer vehicle, always confirm the refrigerant type by checking the under-hood sticker before servicing.

Recharge Procedure

A proper A/C recharge is not a simple top-off. To ensure long-term performance and avoid damaging components, follow these steps:

1. Recover: Use a recovery machine to remove any remaining refrigerant from the system. It is illegal to vent refrigerant into the atmosphere.
2. Evacuate: Hook up a vacuum pump to the system and pull a deep vacuum (at least 29.5 inHg) for 30–60 minutes. This boils off any moisture, which is the enemy of A/C systems.
3. Charge by Weight: This is the most critical step. Do not use pressure gauges to determine the correct charge. Use a digital scale to add the precise weight of refrigerant specified by the manufacturer (42 oz for a 2016 F-250).
4. Add Oil: If you've replaced any components (compressor, condenser, etc.), you must add the correct amount of PAG 46 oil to replenish what was lost.

Common A/C Problems for This Vehicle

The 2011-2016 Super Duty trucks are prone to a few common A/C issues:

• Compressor Failure: The Ford FS-20 compressor used in these trucks is known for premature failure. Often, the internal components will grenade, sending debris throughout the entire system. If you're replacing the compressor, it's critical to flush the system and replace the condenser and expansion valve.
• Condenser Leaks: The condenser sits at the front of the vehicle and is susceptible to damage from road debris. Leaks are common and will prevent the system from holding a charge.
• Evaporator Core Leaks: While less common, a leaky evaporator core is a major repair. The entire dashboard must be removed to access it. Telltale signs include a sweet smell inside the cab and oily residue on the windshield when the defroster is on.

When to Call a Pro

While a DIY-er can legally purchase R-134a, servicing an A/C system requires specialized equipment and knowledge. You should call a professional if:

• You don't have an EPA 609 certification.
• You need to diagnose a leak.
• The system is completely empty (a major leak is likely).
• You've had a major component failure (like a compressor).

Disclaimer: The EPA requires all persons who work on vehicle A/C systems for compensation to be certified in refrigerant recovery and recycling (Section 609 of the Clean Air Act).

Find a certified A/C shop on Repairius.