2019 Ford F-350 Super Duty Factory Maintenance Schedule

Quick reference

Normal vs. Severe-Duty Schedule

Ford outlines two primary maintenance schedules for your 2019 F-350 Super Duty: Normal and Severe-Duty. Understanding the difference is crucial for maximizing your truck's lifespan and minimizing unexpected repairs.

Normal Duty

The normal schedule applies to vehicles operated under typical driving conditions, such as:

• Predominantly highway driving
• Moderate temperatures
• Light loads
• Infrequent towing

Under normal conditions, many intervals can be extended, such as oil changes up to 10,000 miles or 12 months.

Severe-Duty Schedule

A severe-duty schedule is recommended for vehicles subjected to more demanding conditions. If any of the following apply to your driving habits, you should adhere to the severe-duty intervals:

• Towing or hauling heavy loads frequently: This puts significant stress on the engine, transmission, and braking system.
• Driving in dusty, sandy, or muddy conditions: These environments can quickly clog air filters and contaminate fluids.
• Extensive idling or sustained low-speed driving: Common in urban delivery or construction work, this can lead to increased engine wear and heat buildup.
• Repeated short trips (less than 5-10 miles) in cold weather: The engine may not reach optimal operating temperature, leading to moisture buildup in the oil.
• Operating in extreme hot or cold climates: Extreme temperatures accelerate fluid degradation.

For most F-350 owners, especially those who bought a Super Duty for its capabilities, the severe-duty schedule is often the more appropriate choice. This typically means more frequent oil and filter changes (every 5,000 miles or 6 months), earlier transmission and differential fluid services, and more frequent air filter replacements.

Known issues by mileage (2017-2022 F-Series Super Duty)

While the 2019 F-350 Super Duty is a robust truck, some issues have been noted within this generation:

• Up to 30,000 miles: Some owners of the 6.7L Power Stroke diesel have reported issues with the NOx sensor failing, which can trigger a check engine light and limp mode. Early reports of transmission shifting anomalies have also been noted, often resolved with software updates. Death Wobble (violent steering wheel oscillation) at highway speeds can occur, usually due to worn track bar bushings, ball joints, or steering damper issues.
• 30,000 to 60,000 miles: The diesel fuel filters (both primary and secondary) are critical. Neglecting replacement can lead to fuel system damage. Exhaust Gas Recirculation (EGR) valve or cooler issues are possible on the 6.7L Power Stroke, especially with frequent short trips that don't allow the system to fully regenerate. Turbocharger occasional noise or slight hesitation can be a sign of early wear or control issues.
• 60,000 to 100,000 miles: DEF (Diesel Exhaust Fluid) system components (pump, injector, heater) can fail due to crystallization or sensor issues. This is a common pain point for diesel owners. Hub bearing issues leading to noise or looseness have been reported, particularly in trucks with large aftermarket tires or frequent heavy use. U-joint wear on the driveshaft might become noticeable with clunking sounds during acceleration or deceleration. Rust on cab corners and rocker panels can begin to appear in salt-belt regions.
• 100,000+ miles: High-pressure fuel pump (HPFP) failures on the 6.7L Power Stroke, while less common than in earlier generations, are still a concern, especially if fuel filter maintenance is neglected. This is a very expensive repair. Injector issues (stuck open or closed) can also arise. Glow plug failures are possible, potentially causing hard starts in cold weather. Accessory belt and tensioner wear are expected, leading to squealing or chirping noises.

Estimated cost per service

Costs can vary significantly based on your location, shop labor rates, and whether you use OEM or aftermarket parts. These are general estimates for shop services, excluding major unexpected repairs:

• Oil and Filter Change (Gas): $80 - $150
• Oil and Filter Change (Diesel): $150 - $300 (due to higher oil capacity and specialized filters)
• Tire Rotation: $25 - $50 (often included with oil change specials)
• Cabin Air Filter Replacement: $50 - $100
• Engine Air Filter Replacement: $60 - $120
• Fuel Filter Replacement (Diesel): $200 - $400 (includes primary and secondary filters, labor to bleed the system)
• Brake Fluid Flush: $150 - $250
• Coolant Flush: $200 - $400
• Transmission Fluid Service (Drain, Fill, Filter): $300 - $600 (can be higher for a full flush)
• Transfer Case Fluid Change: $100 - $200
• Differential Fluid Change (per axle): $150 - $300
• Spark Plugs Replacement (Gas): $300 - $600 (can be labor-intensive)
• Accessory Belt Replacement: $150 - $300

What you can DIY vs. shop

Many maintenance tasks on your F-350 can be handled by a competent DIYer, potentially saving you significant money. However, some tasks are best left to professionals due to specialized tools, knowledge, or safety concerns.

DIY-Friendly Tasks:

• Oil and Filter Change: Very common DIY task. Ensure you have the correct oil (synthetic blend or full synthetic, specific weight for gas/diesel) and filter, a large drain pan, and a torque wrench for the drain plug. Diesel changes require significantly more oil and different filters.
• Tire Rotation: Requires a jack, jack stands, and a torque wrench. Proper lifting points are crucial for a heavy truck.
• Cabin Air Filter Replacement: Usually located behind the glove box, a simple replacement with basic tools.
• Engine Air Filter Replacement: Typically straightforward, involving unclipping or unscrewing the airbox cover.
• Fuel Filter Replacement (Gas): Easier than diesel, but ensure you relieve fuel pressure, if applicable, and have proper tools.
• Wiper Blade Replacement: A very simple task.

Shop-Recommended Tasks:

• Fuel Filter Replacement (6.7L Power Stroke Diesel): While possible for an advanced DIYer, the two filters are located in different spots, and proper bleeding procedures are critical to avoid fuel system damage. Mistakes can be very costly.
• Brake Fluid Flush: Pressurized systems require specific bleeding procedures to prevent air pockets and maintain ABS functionality. Often requires specialized equipment.
• Coolant Flush: Proper disposal of old coolant is environmentally important. Air bleeding procedures are essential to prevent overheating. Can be messy.
• Transmission Fluid Service: Proper fluid level checking procedures (which can be complex on some modern transmissions), specific fluid types, and filter replacement are often best left to a shop with a lift and specialized tools.
• Differential and Transfer Case Fluid Change: While the drain and fill plugs are accessible, ensuring the correct fluid type and fill level is important. Shops can inspect gear condition.
• Spark Plugs Replacement (Gas Engines): While seemingly simple, plugs can seize in aluminum heads, and proper torque is crucial. The V8 engines can have tight access to some plugs.
• Accessory Belt Replacement: Routing can be complex, and tensioner tools are often required. Incorrect installation can lead to immediate failure or damage.
• Timing Chain Inspection (and any potential repairs): A complex, engine-internal job requiring specialized timing tools and significant mechanical expertise. Definitely a shop job.

For any service, always refer to your 2019 F-350 Super Duty owner's manual for the most accurate and detailed instructions and specifications. When in doubt, consulting an ASE-certified technician is always the safest bet.

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