Ford F350 maintenance: the schedule, the costs, the traps
A heavy-duty full-size pickup with a diesel powertrain. Below: the service intervals with real cost ranges, the repairs F350 owners actually report, and when a fleet operator would sell. Same data Carlyle uses to score fleet buys.
Service schedule
What it needs, and what that runs
| Interval | Service | Typical cost |
|---|---|---|
| 10,000 mi / 12 mo | Diesel oil & filter (6.7L Power Stroke ~13 qt); tire rotation; DEF top-off; inspection | $180-$320 |
| 15,000 mi | Fuel filters (primary + secondary); DEF fill; water-separator drain | $150-$320 |
| 30,000 mi | Engine air filter; cabin air filter; brake inspection | $250-$420 |
| 60,000 mi | Transfer-case fluid (4x4); brake fluid flush; coolant condition check | $400-$720 |
| 100,000 mi | Primary & secondary/EGR coolant flush (two systems); TorqShift 10-speed trans fluid; front & rear axle fluid | $800-$1,600 |
Known repair windows
What F350 owners actually run into
Mileage ranges where these repairs typically show up. Buying above a window is not automatically a pass - it just needs to be priced in.
CP4 high-pressure fuel pump catastrophic failure
high severityAny mileage · $8,000-$12,000
Metal debris contaminates entire fuel system; the marquee 6.7 Power Stroke risk
VGT turbocharger sticking / failure
high severity100,000-180,000 mi · $2,500-$4,500
Variable-geometry vanes sticking from soot
DPF clogging / failed regen
high severityAny mileage · $2,000-$4,000
Short-trip use prevents regen; forced-regen or DPF replacement
EGR cooler / EGR valve
medium severityAny mileage · $1,500-$3,000
Soot clogging, coolant leaks
DEF system (heater, injector, sensor) faults
medium severityAny mileage · $500-$2,000
Faults can force limp/no-start countdown
Glow plugs / injectors
medium severityAny mileage · $1,000-$3,000
Hard cold start; injector wear
Operator notes
Super Duty; profile assumes the 6.7L Power Stroke turbo-diesel V8 (also offered with 6.8 gas V8 and 7.3 'Godzilla' gas V8, which drop all DPF/DEF/EGR/CP4 items). Diesel adds fuel filters (~15-20k), DEF refills, DPF regen, EGR, glow plugs. Large 13-qt oil capacity; timing gear-driven (no belt); severe-service (towing) shortens intervals.
When the smart money sells
On fleet math, a diesel F350 retires around 95,000 miles. Carlyle's garage tracks this per car, against your actual odometer.
Cost ranges are typical US independent-shop estimates and vary by region and condition. Modeling, not mechanic advice - always confirm against your car's service records.
More Ford guides
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