2019 Ford F-350 Super Duty Fluid Type Specs

Quick Reference

Fluid	Type/Spec	Capacity
Engine Oil (6.2L)	SAE 5W-30, Ford WSS-M2C946-B1 (API SN Plus or newer)	7.0 quarts (6.6 L) with filter
Engine Oil (6.7L)	SAE 10W-30, Ford WSS-M2C950-A (API CK-4 or newer)	13.0 quarts (12.3 L) with filter
Engine Coolant	Motorcraft Yellow Prediluted Antifreeze/Coolant (VC-13DLM), Ford WSS-M97B57-A2 (P-OAT)	19.5 quarts (18.4 L) for 6.2L; 37.0 quarts (35.0 L) for 6.7L (initial fill, verify in manual)
Transmission Fluid (TorqShift-G 6-speed)	MERCON LV automatic transmission fluid	17.5 quarts (16.6L) dry fill, verify dipstick
Transfer Case	MERCON LV automatic transmission fluid	2.0 quarts (1.9 L)
Front Differential (Dana M275/Sterling 10.5)	SAE 75W-85 GL-5 / SAE 75W-90 GL-5, Ford WSS-M2C945-A (Dana)/WSS-M2C918-A (Sterling)	3.0 quarts (2.8 L) Dana; 3.0 quarts (2.8 L) Sterling
Rear Differential (Sterling 10.5)	SAE 75W-140 GL-5 synthetic, Ford WSS-M2C949-A with friction modifier if limited-slip	3.5 quarts (3.3 L)
Brake Fluid	DOT 4 Low Viscosity (LV) Motor Vehicle Brake Fluid, Ford WSS-M6C65-A2	As needed
Power Steering Fluid	MERCON LV automatic transmission fluid	As needed
Washer Fluid	Motorcraft Premium Windshield Washer Concentrate (ZC-3A) or equivalent	1 gallon (3.8 L)
DEF (6.7L Diesel)	API Certified Diesel Exhaust Fluid, ISO 22241	7.5 gallons (28.4 L)

Engine Oil

Maintaining the correct engine oil type and level is fundamental to the longevity of your 2019 Ford F-350 Super Duty engine. Ford provides specific recommendations for both the 6.2L V8 gasoline engine and the 6.7L Power Stroke V8 turbo diesel engine.

For the 6.2L V8 Gasoline Engine, Ford specifies SAE 5W-30 motor oil meeting their WSS-M2C946-B1 standard. This standard typically corresponds to API SN PLUS or newer classifications, designed to protect against low-speed pre-ignition (LSPI) in turbocharged gasoline direct injection engines, though the 6.2L is naturally aspirated. The capacity is approximately 7.0 quarts (6.6 L) with a filter change. Always check your owner's manual for the most up-to-date information and verify with the dipstick after filling.

For the 6.7L Power Stroke V8 Turbo Diesel Engine, the requirement is different. Ford recommends SAE 10W-30 motor oil that meets their WSS-M2C950-A specification. This specification aligns with the API CK-4 or newer diesel engine oil standards, which are formulated to provide enhanced protection for modern diesel engines, especially those with exhaust aftertreatment systems. The 6.7L Power Stroke has a substantial oil capacity of approximately 13.0 quarts (12.3 L) with a filter change. Due to this large volume, using the correct specification is crucial. Using an incorrect oil type or weight can lead to premature wear and potential damage to emission control systems.

Intervals and Pitfalls: Ford recommends oil changes typically every 7,500 to 10,000 miles or every six months, whichever comes first, under normal operating conditions. Severe duty cycles (like heavy towing, extreme temperatures, or dusty environments) will necessitate more frequent changes. Always use a high-quality oil filter that meets or exceeds OEM specifications. Never mix different oil types or viscosities, especially between gasoline and diesel engine oils, as this can dilute protective additives and compromise engine lubrication.

Engine Coolant

Your 2019 Ford F-350 Super Duty utilizes a specific type of coolant designed for optimal heat transfer and corrosion protection. Ford specifies Motorcraft Yellow Prediluted Antifreeze/Coolant (VC-13DLM), which is an Organic Acid Technology (OAT) coolant with a phosphated hybrid inhibitor package (P-OAT). It meets Ford specification WSS-M97B57-A2.

This yellow-colored coolant is distinct from older green (IAT) or orange/pink (Dex-Cool, some HOAT) coolants. The capacity for the 6.2L gas engine is around 19.5 quarts (18.4 L), while the 6.7L Power Stroke diesel engine, with its more complex cooling system, requires approximately 37.0 quarts (35.0 L) for an initial fill. Always verify the exact capacity in your owner's manual and ensure the system is properly bled of air after any coolant service.

Intervals and Pitfalls: Ford typically recommends coolant changes every 6 years or 100,000 miles, whichever comes first. However, inspecting the coolant level and condition regularly is always a good practice. Never mix different coolant types. Mixing OAT with traditional IAT or HOAT coolants can lead to chemical reactions, gel formation, reduced corrosion protection, and eventual damage to the cooling system components, including the radiator, water pump, and heater core. Always use distilled water if you are mixing concentrated coolant yourself, although the Motorcraft Yellow is typically sold as a prediluted 50/50 mix.

Transmission Fluid

The 2019 Ford F-350 with the TorqShift-G 6-speed automatic transmission requires MERCON LV automatic transmission fluid. MERCON LV is a low-viscosity, fully synthetic fluid designed for improved fuel economy and precise shift quality. It meets Ford specification MERCON LV.

The transmission capacity for a dry fill is approximately 17.5 quarts (16.6 L). However, a pan drop and filter change will typically replace only a portion of the total fluid. Always refer to the owner's manual for the correct checking procedure and fill level, which usually involves checking the fluid temperature and level on the dipstick.

Intervals and Pitfalls: Ford recommends transmission fluid and filter changes typically every 30,000 to 60,000 miles depending on use (severe duty vs. normal). Heavy towing or frequent plowing will shorten this interval. Never use a "universal" or non-MERCON LV fluid. Using the incorrect fluid type can lead to premature transmission wear, shuddering, harsh shifts, and eventual transmission failure. MERCON LV is a highly specific fluid; ensure any fluid used explicitly states it meets the MERCON LV specification.

Transfer Case Fluid

If your 2019 F-350 Super Duty is equipped with 4-wheel drive, the transfer case also uses MERCON LV automatic transmission fluid. This fluid specification is common across many Ford transfer cases for its lubrication and performance characteristics. The capacity is approximately 2.0 quarts (1.9 L).

Intervals and Pitfalls: Ford generally recommends transfer case fluid changes every 30,000 to 60,000 miles, especially if the vehicle is frequently used in 4WD, for towing, or off-road. Regular changes help protect the internal gears and clutches. As with the transmission, only use genuine Ford or licensed MERCON LV fluid.

Differential Fluid (Front & Rear)

Both the front and rear differentials in your F-350 require specific gear oils to ensure proper lubrication and protection under the heavy loads these trucks endure.

For the Front Differential, typically a Dana M275 or Sterling 10.5, Ford specifies a SAE 75W-85 GL-5 or SAE 75W-90 GL-5 gear oil. The specific Ford specification for Dana front axles is WSS-M2C945-A, and for Sterling front axles, it