2022 Ford F-350 Super Duty Fluid Type Specs

Quick reference

Fluid	Type/Spec	Capacity
Engine Oil (6.7L Diesel)	SAE 10W-30 (preferred) or SAE 5W-40, API CK-4 (Ford WSS-M2C171-F1)	~13 quarts (12.3L)
Engine Oil (6.2L Gas)	SAE 5W-30, API SN Plus or SP (Ford WSS-M2C946-B1)	~7 quarts (6.6L)
Engine Oil (7.3L Gas)	SAE 5W-30, API SN Plus or SP (Ford WSS-M2C946-B1)	~7.5 quarts (7.1L)
Engine Coolant	Motorcraft Yellow Prediluted Antifreeze/Coolant (Ford WSS-M97B57-A2)	~20-22 quarts (18.9-20.8L) (varies by engine and configuration)
Transmission Fluid (10R140)	MERCON ULV	~17.5 quarts (16.6L) (initial fill, dry)
Transfer Case	MERCON LV	~2 quarts (1.9L)
Front Differential	SAE 75W-85 GL-5 (Motorcraft XO-75W85-QS) or SAE 75W-90 GL-5 (Motorcraft XO-75W90-QGL)	~2.75-3 quarts (2.6-2.8L)
Rear Differential	SAE 75W-140 GL-5 (Ford WSS-M2C942-A) or SAE 75W-85 GL-5 (Ford WSS-M2C941-A)	~3.5-4 quarts (3.3-3.8L) (varies by axle)
Brake Fluid	Motorcraft DOT 4 LV High Performance Motor Vehicle Brake Fluid (Ford WSS-M6C65-A2)	As needed, check reservoir
Power Steering Fluid	Electro-hydraulic system, no user-serviceable fluid (electric assist)	N/A (electric power steering)
Washer Fluid	Motorcraft Premium Windshield Washer Concentrate (Ford ZC-3-A) or equivalent	~1 gallon (3.8L)
DEF	API Certified Diesel Exhaust Fluid (ISO 22241)	5 gallons (18.9L)

Engine Oil

6.7L Power Stroke Diesel: For the 2022 Ford F-350 with the 6.7L Power Stroke diesel engine, the factory-preferred engine oil is a SAE 10W-30 meeting API CK-4 standards. Ford specifies their own material standard, WSS-M2C171-F1. A SAE 5W-40 API CK-4 oil is also acceptable, especially in colder climates for improved cold starting performance. Capacity is approximately 13 quarts (12.3 liters). It's crucial to use an oil explicitly meeting the API CK-4 standard, as older CI-4 or CJ-4 oils may not provide adequate protection for modern diesel emission systems. Always check your owner's manual for the most up-to-date information and specific recommendations for your climate and driving conditions. Ford generally recommends changing engine oil and filter every 10,000 miles or 12 months, whichever comes first, under normal operating conditions.

6.2L and 7.3L Gas Engines: For gas-powered 2022 F-350s, both the 6.2L and the 7.3L Godzilla engines specify SAE 5W-30 engine oil meeting API SN Plus or API SP standards. Ford's material specification for these engines is WSS-M2C946-B1. The 6.2L engine typically holds around 7 quarts (6.6 liters), while the 7.3L engine holds approximately 7.5 quarts (7.1 liters). Using API SN Plus or SP is important due to the Gasoline Direct Injection (GDI) fuel systems used in these engines, which can be prone to Low-Speed Pre-Ignition (LSPI) if the incorrect oil is used. These newer API categories offer enhanced protection against LSPI and timing chain wear. The recommended service interval is typically 7,500-10,000 miles or 12 months, contingent on driving conditions.

Engine Coolant

The 2022 Ford F-350 Super Duty utilizes Motorcraft Yellow Prediluted Antifreeze/Coolant which meets Ford specification WSS-M97B57-A2. This is an Organic Acid Technology (OAT) coolant with a distinct yellow color. It's crucial to use only this specified coolant or an aftermarket equivalent that explicitly states compliance with Ford WSS-M97B57-A2. Mixing different coolant types (e.g., OAT with HOAT or IAT coolants, especially the older green types) can lead to chemical reactions, gelling, reduced corrosion protection, and potential damage to cooling system components. Always use a prediluted 50/50 mix or dilute with distilled water if using concentrate. Coolant capacity varies by engine and configuration but is generally in the range of 20-22 quarts (18.9-20.8 liters). The recommended service interval for the initial coolant change is typically around 100,000 miles, then every 50,000 miles thereafter, but always refer to your owner's manual for precise maintenance schedules.

Transmission Fluid

The 2022 Ford F-350 Super Duty, equipped with the 10-speed automatic transmission (10R140), requires MERCON ULV (Ultra Low Viscosity) transmission fluid. This is a very specific, low-viscosity fluid designed for the intricate internal components and efficiency requirements of modern Ford transmissions. Using any other type of automatic transmission fluid, including other MERCON specifications like MERCON LV or MERCON V, can lead to shift quality issues, premature wear, and transmission damage. The initial fill for a dry transmission is approximately 17.5 quarts (16.6 liters). Transmission fluid is considered a "lifetime fill" by Ford under normal operating conditions, but severe duty (towing, heavy hauling, extreme temperatures) may warrant earlier inspection and potential fluid replacement. Many technicians recommend a fluid and filter change every 60,000-100,000 miles for longevity, especially with heavy use. Always consult your owner's manual for specific maintenance recommendations.

Transfer Case Fluid

For 4WD and AWD equipped 2022 Ford F-350 models, the transfer case requires MERCON LV automatic transmission fluid. The capacity is approximately 2 quarts (1.9 liters). Even though it's called "automatic transmission fluid," it's specifically formulated for transfer case applications. Do not use MERCON ULV or any other fluid in the transfer case. The transfer case fluid should typically be inspected at regular service intervals and changed every 60,000 to 100,000 miles, or more frequently under severe conditions like frequent off-road driving or heavy towing.

Differential Fluid

Front Differential: The front differential typically calls for a SAE 75W-85 GL-5 gear oil, often specifically Motorcraft Part Number XO-75W85-QS. Some configurations may instead use SAE 75W-90 GL-5, such as Motorcraft Part Number XO-75W90-QGL. Always verify the exact specification and viscosity in your owner's manual, as variations can occur based on axle type. The capacity is roughly 2.75 to 3 quarts (2.6-2.8 liters). A GL-5 rated gear oil is critical for the extreme pressure protection required by differentials.

Rear Differential: The rear differential fluid specification can vary significantly based on the axle type and whether it has a limited-slip differential. Most commonly, a SAE 75W-140 GL-5 fluid meeting Ford specification WSS-M2C942-A is used, especially for heavy-duty applications. However, certain axles might specify SAE 75W-85 GL-5 (Ford WSS-M2C941-A). If your F-350 is equipped with a limited-slip differential, an appropriate friction modifier additive may be required or already blended into the specified fluid. Always verify in your owner's manual. Capacity usually ranges from 3.5 to 4 quarts (3.3-3.8 liters). Differential fluids are exposed to high heat and extreme pressure, so using the correct GL-5 specification is paramount. Ford generally recommends inspecting differential fluid at regular intervals and replacing it every 150,000 miles, or more frequently (e.g., 50,000 miles) if towing frequently or operating in severe conditions.

Brake Fluid

The 2022 Ford F-350 Super Duty uses Motorcraft DOT 4 LV High Performance Motor Vehicle Brake Fluid, which meets Ford specification WSS-M6C65-A2. The "LV" stands for Low Viscosity, which is important for the proper operation of modern ABS and stability control systems, especially in cold temperatures. While DOT 3 and DOT 4 fluids are compatible, always refill with DOT 4 LV to maintain optimal system performance and responsiveness. Never use DOT 5 (silicone-based) brake fluid, as it is incompatible with the F-350's braking system components and can cause extensive damage. Brake fluid is hygroscopic, meaning it absorbs moisture over time, which lowers its boiling point and can lead to corrosion in the braking system. Ford typically recommends replacing brake fluid every 2 years or 30,000 miles, although some schedules may vary. Regular inspection of fluid level and condition is important.

Power Steering Fluid

The 2022 Ford F-350 Super Duty models are equipped with an electric power-assist steering (EPAS) system. This means there is no traditional power steering pump or fluid reservoir for the user to service. The system is electronically controlled, providing assistance directly at the steering rack. Therefore, there is no power steering fluid to check or replace.

Washer Fluid

Any high-quality automotive windshield washer fluid is suitable for the 2022 Ford F-350. Ford's official product is Motorcraft Premium Windshield Washer Concentrate (ZC-3-A) or an equivalent. It's best to use a fluid designed for all-season use, especially one with de-icing or bug-removing properties if desired, and ensure it offers freeze protection appropriate for your climate. The washer fluid reservoir typically holds about 1 gallon (3.8 liters).

Diesel Exhaust Fluid (DEF)

For 2022 F-350 Super Duty models equipped with the 6.7L Power Stroke Diesel engine, Diesel Exhaust Fluid (DEF) is required for the Selective Catalytic Reduction (SCR) system. It is crucial to use only API Certified Diesel Exhaust Fluid that meets the ISO 22241 standard. Do not use any other fluids or additives in the DEF tank, as this can severely damage the SCR system and lead to costly repairs not covered by warranty. DEF is consumed constantly during engine operation, and a warning light will illuminate when the level is low, prompting a refill. The DEF tank capacity is approximately 5 gallons (18.9 liters). The DEF system is sensitive to contamination and temperature extremes, so always store DEF properly and avoid using expired or contaminated fluid. If the DEF tank runs empty, the engine's performance will be severely limited, and the vehicle may not restart until the tank is refilled.

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