2022 Ford F-350 Super Duty A/C Refrigerant and Oil Guide

Quick Answer

• Refrigerant Type: R-1234yf
• System Charge Amount: 44.0 oz (1247 g)
• PAG Oil Type: PAG 46 (Motorcraft WSS-M2C313-A)
• Total System Oil Capacity: 7.2 oz (213 mL)
• Low-Side Service Port Location: Near the passenger-side hood hinge, on the line running from the evaporator to the compressor.
• High-Side Service Port Location: In front of the passenger-side battery, on the smaller diameter line running to the condenser.

Disclaimer: A/C service can be hazardous. The refrigerant in your vehicle is a flammable, high-pressure gas. Service should only be performed by trained professionals who are EPA Section 609 certified. Always wear safety glasses when working around the A/C system.

Why R-1234yf Matters

Starting in the mid-2010s, automakers began transitioning from R-134a refrigerant to the more environmentally friendly R-1234yf. Your 2022 F-350 uses R-1234yf, which has a much lower Global Warming Potential (GWP) than its predecessor. While this is a win for the environment, it has a few practical implications for you:

• Cost: R-1234yf is significantly more expensive than R-134a. This is due to both the manufacturing process and supply and demand.
• Specialized Equipment: R-1234yf is classified as mildly flammable (A2L), so it requires a dedicated, spark-proof recovery and recharge machine. Shops cannot use their older R-134a machines on your truck.
• No "Top-Offs": Do-it-yourself refrigerant cans are less common and more expensive for R-1234yf. More importantly, simply "topping off" the system is a poor practice that can lead to improper performance and component damage.

Recharge Procedure

Properly recharging the A/C system is about more than just adding refrigerant until it gets cold. The only way to ensure optimal cooling and longevity is to charge the system by weight.

1. Recovery: A certified technician will first connect a specialized R-1234yf machine to the service ports and recover any remaining refrigerant from the system.
2. Evacuation: The technician will then pull the system into a deep vacuum for at least 30-45 minutes. This crucial step boils off any moisture that has entered the system. Moisture is the enemy of A/C systems, as it can mix with refrigerant and oil to form corrosive acids.
3. Charge by Weight: With the system still under vacuum, the exact amount of refrigerant specified by Ford—44.0 oz for your truck—is weighed and injected back into the system. Charging by pressure is inaccurate, as ambient temperature can drastically alter pressure readings.

Common A/C Problems for this Vehicle

While the Super Duty platform is robust, no vehicle is immune to A/C problems. On this generation of trucks, common issues include:

• Compressor Failures: The A/C compressor is the heart of the system. While generally reliable, internal failures can occur, often leading to a no-cool situation and sometimes a seized compressor clutch. If the compressor fails internally, replacing the condenser, accumulator, and expansion valve is also critical to remove debris.
• Condenser Leaks: Located at the very front of the truck, the condenser is susceptible to damage from road debris like rocks and gravel. Even a small puncture will cause a rapid loss of refrigerant.
• Evaporator Core Leaks: Though less common, a leak can develop in the evaporator core, which is located deep inside the dashboard. This is a labor-intensive repair, often requiring the complete removal of the dashboard assembly. A musty smell or fog coming from the vents can sometimes indicate an evaporator leak.

When to Call a Pro

You should seek professional service from a qualified technician if you experience any of the following:

• The A/C blows warm or only slightly cool air.
• You hear unusual noises (grinding, squealing) when the A/C is turned on.
• The A/C system cycles on and off rapidly.
• You notice an oily residue on A/C components, indicating a refrigerant and oil leak.

Attempting a DIY repair without the proper training and equipment can be costly and dangerous. A certified technician has the diagnostic tools to pinpoint the exact cause of the problem, ensuring a correct and lasting repair.

Find a certified A/C shop on Repairius.