Ford Diesel Repair & Service
6.7L Power Stroke Specialists | Super Duty F-250, F-350, F-450 & F-550
Proudly serving Brevard, Asheville, Hendersonville, Waynesville & Canton NC
Diesel Services We Offer
Ford Super Duty diesel trucks are the backbone of Western North Carolina's workforce. Whether you rely on your F-250 for towing horse trailers through the Blue Ridge, use your F-350 for farm work in Transylvania County, or depend on your F-450 or F-550 for commercial hauling, your 6.7L Power Stroke diesel engine demands specialized service from technicians who understand its complex systems. At Mahon Ford in Brevard, NC, our Ford-trained diesel technicians provide comprehensive repair and maintenance for every Super Duty diesel on the road.
Diesel Oil Change Service
The 6.7L Power Stroke requires approximately 15 quarts of diesel-rated engine oil per change. We use Motorcraft SAE 15W-40 (CK-4 rated) or 10W-30 full synthetic oil designed specifically for Ford diesel engines. Using the correct diesel-rated oil is critical for protecting fuel injectors, the turbocharger, and the emissions aftertreatment system. Trucks used for heavy towing on mountain grades benefit from more frequent oil changes to account for increased engine load.
Fuel System Service
The Power Stroke's high-pressure fuel injection system operates at extreme pressures to deliver precise fuel atomization. Our diesel fuel system service includes replacing both the primary and secondary fuel filters, inspecting fuel lines and connectors, testing fuel pressure, and checking injector performance. Contaminated or degraded diesel fuel is a leading cause of injector failure, making regular fuel system maintenance essential for trucks operating in Western North Carolina.
Turbocharger Inspection & Repair
The variable-geometry turbocharger on the 6.7L Power Stroke is engineered to deliver strong boost across a wide RPM range. Mountain driving conditions in WNC — steep grades on US-276, US-64, and the Blue Ridge Parkway — place significant demands on the turbo system. Our technicians inspect the turbocharger for shaft play, housing damage, wastegate function, and boost leaks. Early detection of turbo issues prevents costly failures and keeps your Super Duty performing at full capability.
DEF System & DPF Maintenance
Modern Ford diesel trucks use Diesel Exhaust Fluid (DEF) and a Diesel Particulate Filter (DPF) to meet emissions standards. The DEF system requires regular refills and occasional sensor service, while the DPF needs periodic regeneration cycles to burn off accumulated soot. Our Ford diagnostic equipment reads DEF quality, DPF soot load levels, and regeneration history to ensure your emissions system operates correctly and avoids derating or limp-mode conditions.
Exhaust Aftertreatment Service
The complete exhaust aftertreatment system on the 6.7L Power Stroke includes the Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), and Selective Catalytic Reduction (SCR) catalyst. Each component works together to reduce emissions. Short-trip driving and cold starts — common during WNC winters — can prevent proper regeneration cycles and cause issues. Our technicians diagnose aftertreatment faults, perform forced regenerations when needed, and service or replace components to restore full system function.
Cooling System Service
Ford Super Duty diesel trucks use a dual-cooling system with separate circuits for the engine and the charge air cooler. The 6.7L Power Stroke generates significant heat under heavy towing loads, and mountain grades amplify that stress. Our cooling system service includes coolant flush and replacement with Motorcraft Gold coolant, thermostat testing, radiator inspection, water pump evaluation, and charge air cooler leak testing. Proper cooling prevents overheating during long climbs with heavy trailers.
6.7L Power Stroke Specifications
The 6.7L Power Stroke V8 Turbo Diesel is Ford's flagship diesel engine for the Super Duty lineup. Understanding these specifications helps owners and fleet managers plan maintenance schedules and anticipate service needs. The Power Stroke is a complex, high-output engine that rewards proper care with exceptional durability and towing capability.
| Specification | Details |
|---|---|
| Engine Type | 6.7L Power Stroke V8 Turbo Diesel |
| Displacement | 6.7 liters (406 cubic inches) |
| Horsepower | Up to 500 HP |
| Torque | Up to 1,200 lb-ft |
| Oil Capacity | Approximately 15 quarts (with filter) |
| Recommended Oil | Motorcraft SAE 15W-40 (CK-4) or 10W-30 Full Synthetic |
| Fuel Filter Interval | Every 15,000 - 20,000 miles |
| DEF Tank Capacity | Approximately 7 gallons |
| Turbocharger | Single variable-geometry turbo (VGT) |
| Fuel Injection | High-pressure common rail direct injection |
Common Diesel Service Intervals
Maintaining your Ford Super Duty diesel on schedule is the single most effective way to avoid expensive repairs. The intervals below are based on Ford's recommendations for normal driving conditions. If you use your truck for heavy towing, commercial applications, farm work, or frequent mountain driving in Western North Carolina, consider moving to the shorter end of each interval range.
| Service Item | Recommended Interval |
|---|---|
| Engine Oil & Filter Change | Every 7,500 - 10,000 miles |
| Fuel Filter Replacement | Every 15,000 - 20,000 miles |
| DEF Fluid Refill | Every 5,000 - 10,000 miles (usage varies) |
| Coolant System Inspection | Every 30,000 miles or 3 years |
| Coolant Flush & Replacement | Every 100,000 miles or 6 years |
| Transmission Fluid Service | Every 30,000 - 60,000 miles |
| Turbocharger Inspection | Every 60,000 miles or as indicated |
| Exhaust Aftertreatment Inspection | Every 60,000 miles or as indicated |
| Air Filter Replacement | Every 15,000 - 30,000 miles |
| Drive Belt Inspection | Every 30,000 miles |
Note on Service Intervals: Trucks used for heavy towing, commercial hauling, farm equipment transport, or frequent mountain driving should follow the shorter end of each interval range. Western North Carolina's steep grades and elevation changes put additional strain on diesel engines and their supporting systems. Call 828-884-4151 to discuss a maintenance schedule tailored to your specific usage.
Signs Your Diesel Needs Service
The 6.7L Power Stroke communicates when something is wrong. Paying attention to these warning signs can prevent small issues from becoming major repairs. Diesel engines are durable, but the complex emissions and fuel systems require prompt attention when symptoms appear.
- Black, white, or blue exhaust smoke that persists beyond initial cold startup
- Reduced power or sluggish acceleration, especially under towing load on mountain grades
- Check Engine light, wrench icon, or DEF warning messages on the dashboard
- Rough idle, engine misfires, or unusual vibration at idle speed
- Increased fuel consumption without a change in driving habits or towing load
- Hard starting, extended cranking, or failure to start in cold WNC winter mornings
- Turbo whistle changes, unusual turbo sounds, or loss of boost pressure
- Coolant loss, overheating warnings, or temperature gauge climbing under load
- DEF quality warning or low DEF alerts appearing more frequently than normal
- Diesel exhaust odor inside the cab or visible fuel leaks under the truck
- Transmission hunting between gears or delayed engagement when towing
- DPF regeneration cycles occurring more frequently or failing to complete
Why Choose Mahon Ford for Diesel Service
Ford-Trained Diesel Technicians
Ford diesel engines are not the same as gasoline engines, and they should not be serviced like gasoline engines. The 6.7L Power Stroke features a high-pressure common rail fuel injection system, a variable-geometry turbocharger, and a multi-stage exhaust aftertreatment system that all require specialized knowledge and Ford-specific diagnostic equipment.
At Mahon Ford, our technicians complete Ford's diesel-specific training programs and hold current certifications for Power Stroke diagnostics and repair. We use Ford's IDS and FDRS diagnostic platforms — the same systems used at every Ford dealership — to read fault codes, perform module programming, run injector balance tests, initiate forced DPF regenerations, and calibrate emissions components.
We stock genuine Motorcraft diesel oil, fuel filters, DEF fluid, and replacement parts designed to meet Ford's engineering specifications. Using OEM parts protects your warranty coverage and ensures every component works with the Power Stroke's integrated systems the way Ford intended.
Many Super Duty owners in Brevard, Asheville, Hendersonville, Waynesville, and Canton rely on their diesel trucks for demanding work: towing construction equipment through mountain passes, hauling livestock trailers on rural roads, and running commercial fleets across Western North Carolina. We understand the conditions these trucks face every day, and we service them accordingly.
Mahon Ford — proudly serving Brevard, Asheville, Hendersonville, Waynesville & Canton NC.
Created July 25, 2026 by MM Dealer Advocates