2026 Ford Super Duty Maintenance Schedule
Complete service intervals and maintenance guide for the F-250, F-350, and F-450 — covering the 6.8L V8, 7.3L Godzilla V8, and 6.7L Power Stroke Turbo Diesel. Keep your Super Duty running strong with factory-recommended service at Mahon Ford near Asheville, NC.
Scheduled Maintenance Overview
The 2026 Ford Super Duty lineup — including the F-250, F-350, and F-450 — shares a common maintenance schedule across all three models. Whether you drive a Super Duty for daily hauling, commercial work, or weekend towing, staying on top of Ford's recommended service intervals is essential to protect your investment and maintain peak performance.
All 2026 Super Duty trucks are equipped with Ford's Intelligent Oil-Life Monitor (IOLM) system, which continuously analyzes engine operating conditions such as temperature, load, RPM, and idle time to calculate the optimal oil change interval. The IOLM will display a message on your instrument cluster when service is due. Under normal conditions, oil changes typically fall between 7,500 and 10,000 miles, though severe use can trigger a change as early as 5,000 miles.
The 2026 Super Duty is available with three powertrains: the 6.8L V8 gas engine producing 405 horsepower and 445 lb-ft of torque, the 7.3L V8 "Godzilla" gas engine producing 430 horsepower and 485 lb-ft of torque, and the 6.7L Power Stroke V8 Turbo Diesel producing 475 horsepower and a class-leading 1,050 lb-ft of torque. While gas and diesel engines share many maintenance intervals, the Power Stroke diesel has several additional service requirements covered in detail below.
Oil & Filter
IOLM-determined intervals, typically every 7,500-10,000 miles. Diesel requires 13 quarts of CK-4 rated oil.
Tire Rotation
Rotate tires at every oil change to promote even wear. Critical for Super Duty trucks carrying heavy loads.
Cabin Air Filter
Replace every 20,000 miles to maintain clean airflow and HVAC system efficiency in your Super Duty cab.
Spark Plugs / Glow Plugs
Gas engines: 60,000 mi (severe) to 100,000 mi. Diesel glow plugs: inspect annually, replace as needed.
Complete Maintenance Schedule by Mileage
The following table outlines every scheduled maintenance item for the 2026 Ford Super Duty across all engine options. Items marked "Diesel Only" apply exclusively to the 6.7L Power Stroke. All intervals assume normal operating conditions unless noted otherwise.
| Interval | Service Items | Applies To |
|---|---|---|
| Every Oil Change (7,500-10,000 mi typical) | Engine oil & filter replacement; tire rotation; multi-point inspection; brake pad & rotor inspection; fluid level checks (coolant, brake, power steering, windshield washer); battery health check; exhaust system inspection; DEF refill (diesel only) | All Engines |
| 15,000 Miles (Diesel Only) | Fuel filter replacement (severe schedule); DEF system inspection; diesel exhaust system check | 6.7L Power Stroke Diesel |
| 20,000 Miles | Cabin air filter replacement; fuel filter replacement (diesel, normal schedule); inspect accessory drive belt | All Engines (fuel filter diesel only) |
| 30,000 Miles | Engine air filter replacement; DPF inspection and regeneration cycle check (diesel only); inspect front and rear axle fluid condition | All Engines (DPF diesel only) |
| 60,000 Miles (Severe) | Spark plug replacement (gas engines, severe use only); automatic transmission fluid change; transfer case fluid change (4WD models); front and rear axle fluid change (severe) | Gas & 4WD Models |
| 100,000 Miles | Spark plug replacement (all gas engines, normal schedule); accessory drive belt inspection and replacement as needed; full cooling system inspection | Gas Engines |
| 150,000 Miles | Automatic transmission fluid change (normal schedule); front and rear axle fluid change; transfer case fluid change (4WD, normal); accessory drive belt replacement; full suspension and steering inspection | All Engines |
| 200,000 Miles | Initial engine coolant replacement (Ford recommends first change at 200,000 miles or 10 years with factory-fill coolant); complete cooling system flush and inspection | All Engines |
Time-Based Service Intervals
Brake Fluid: Ford recommends replacing brake fluid every 3 years regardless of mileage. Under severe conditions (heavy towing, mountain driving), replace every 2 years. Brake fluid absorbs moisture over time, which reduces braking effectiveness and can cause internal corrosion.
Diesel Exhaust Fluid (DEF): The 6.7L Power Stroke diesel should have its DEF tank refilled at every oil change. The 7.5-gallon tank is consumed at a rate that varies from 3,000 to 7,000 miles depending on load, towing, and driving conditions. Your dashboard will display a warning when DEF is running low — do not ignore this warning, as the truck will limit performance if the tank runs empty.
Engine-Specific Maintenance Details
Each of the three Super Duty engines has unique oil requirements, filter specifications, and service considerations. Use the table below to identify the correct parts and fluids for your specific engine.
| Specification | 6.8L V8 Gas | 7.3L V8 Gas "Godzilla" | 6.7L Power Stroke Diesel |
|---|---|---|---|
| Oil Type | 5W-30 Full Synthetic | 5W-30 Full Synthetic | 15W-40 CK-4 Diesel or 10W-30 Synthetic |
| Oil Capacity | 7.0 qt | 8.0 qt | 13.0 qt |
| Oil Filter | Motorcraft FL-820S | Motorcraft FL-820S | Motorcraft FD-4625 |
| Spark Plugs / Glow Plugs | Motorcraft SP-580 (x8) | Motorcraft SP-589 (x8) | Motorcraft ZD-18 glow plugs (x8) |
| Plug Interval | 60K (severe) / 100K mi | 60K (severe) / 100K mi | Replace as needed (inspect annually) |
6.7L Power Stroke Diesel: Additional Service Items
The Power Stroke diesel requires several maintenance items that do not apply to gas engines. Staying on top of these diesel-specific intervals is critical for emissions compliance, engine longevity, and peak performance:
- Diesel Exhaust Fluid (DEF): Refill at every oil change. The 7.5-gallon DEF tank treats exhaust emissions and is consumed at a variable rate depending on load and driving conditions.
- Fuel Filter Replacement: Every 15,000 to 20,000 miles. The Power Stroke uses a two-stage fuel filtration system. Contaminated fuel or water intrusion can cause serious injector damage if filters are neglected.
- Diesel Particulate Filter (DPF): Monitor regeneration cycles through the dashboard display and inspect every 30,000 miles. The DPF captures soot from the exhaust and periodically burns it off during regeneration. Frequent short trips can prevent complete regeneration and lead to DPF clogging.
- Glow Plugs: Inspect annually and replace as needed. Glow plugs are essential for cold-weather starting and should be tested before each winter season.
- Diesel Engine Oil: Use only CK-4 or CJ-4 rated diesel engine oil. The Power Stroke requires 13 quarts per oil change — significantly more than gas engines — so ensure your service provider uses the correct specification and quantity.
Severe & Special Operating Conditions
Ford defines "severe" or "special" operating conditions as any driving pattern that places increased stress on the engine, transmission, and drivetrain. If your Super Duty regularly operates under any of the following conditions, you should follow the severe maintenance schedule with shorter service intervals:
- Towing a trailer or carrying heavy payloads (including fifth-wheel and gooseneck loads)
- Driving on steep, mountainous terrain or long grades (common in Western NC)
- Frequent short trips under 10 miles, especially in cold weather
- Extended idling or low-speed driving (job site work, construction, farming)
- Driving on unpaved, dusty, muddy, or gravel roads
- Operating in extreme temperatures (below 10°F or above 95°F)
- Commercial or fleet use with high daily mileage
- Operating with a snow plow, dump body, or other upfit equipment
Normal vs. Severe Maintenance Intervals
| Service Item | Normal Schedule | Severe Schedule |
|---|---|---|
| Engine Oil & Filter | IOLM (7,500-10,000 mi) | IOLM (5,000-7,500 mi) |
| Spark Plugs (Gas Engines) | 100,000 mi | 60,000 mi |
| Transmission Fluid | 150,000 mi | 60,000 mi |
| Transfer Case Fluid (4WD) | 150,000 mi | 60,000 mi |
| Brake Fluid | Every 3 years | Every 2 years |
| Engine Air Filter | 30,000 mi | Inspect at 15,000; replace as needed |
| Fuel Filter (Diesel) | 20,000 mi | 15,000 mi |
Western NC Mountain Driving Advisory
The Brevard and Asheville area presents unique challenges for Super Duty trucks. Routes such as US-276 through Pisgah National Forest, the Blue Ridge Parkway, and the I-26 Saluda Grade feature sustained steep grades that place extraordinary demands on engines, transmissions, and braking systems. If you regularly tow with your Super Duty on these mountain roads, Mahon Ford strongly recommends following the severe maintenance schedule for all drivetrain fluids and brake components.
Power Stroke diesel owners should take advantage of the engine-exhaust braking system on long descents to reduce wear on brake pads and rotors. The exhaust brake uses back-pressure from the turbocharger to slow the vehicle without relying solely on the service brakes — a significant advantage when towing heavy loads down mountain grades. Consult your owner's manual for proper exhaust brake operation.
Monthly & Semi-Annual Owner Checks
Between scheduled dealer service visits, Ford recommends these owner-performed inspections to catch potential issues early and keep your Super Duty in top condition:
Monthly
Engine oil level, tire pressure & spare, all lights & signals, washer fluid level, DEF level (diesel)
Every 6 Months
Battery terminals, coolant level, wiper blades, door seals, parking brake
Annually
Safety warning lamps, seatbelt function, horn operation, exhaust check
Before Winter
Coolant strength, battery test, tire tread depth, wiper blades, heater operation, block heater test (diesel)
Schedule Your Super Duty Maintenance at Mahon Ford
Mahon Ford of Brevard is your trusted Super Duty service destination in Western North Carolina. Our Ford-trained and certified technicians specialize in the F-250, F-350, and F-450 — including full service capabilities for the 6.7L Power Stroke diesel. We use genuine Motorcraft parts and Ford-approved fluids on every service to ensure your Super Duty meets factory specifications and maintains warranty coverage.
Located at 1235 Asheville Hwy in Brevard, NC 28712, we proudly serve Super Duty owners from across the region including Asheville, Hendersonville, Canton, and Waynesville. Whether you need a routine oil change, diesel fuel filter replacement, transmission service, or a complete multi-point inspection before towing season, our service team is ready to keep your Super Duty performing at its best. Call us at (828) 884-4151 or schedule your appointment online today.
Maintenance intervals listed on this page are based on Ford Motor Company's official 2026 Super Duty scheduled maintenance guide and are provided for informational purposes. Actual service intervals may vary based on driving conditions, vehicle usage, and the Intelligent Oil-Life Monitor system readings. Always consult your owner's manual for complete maintenance requirements specific to your vehicle. Mahon Ford of Brevard is not responsible for changes to manufacturer-recommended service intervals. Prices for parts and service are subject to change without notice. Contact our service department for current pricing and availability.
Created July 5, 2026 by MM Dealer Advocates