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 the mileage windows worth buying ahead of - whether you are keeping it for yourself or putting it to work.
Service schedule
What it needs, and what that runs
| Interval | Service | 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
Cost to keep
What it costs to own, by how long you keep it
Scheduled servicing only, from a brand-new F350 at 12,000 miles a year. Insurance, fuel, tires and depreciation are yours to add - this is the part the shop charges you for.
| You keep it | Odometer | Servicing | Per month |
|---|---|---|---|
| 1 year | 12,000 mi | $250 | $21 |
| 3 years | 36,000 mi | $1,555 | $43 |
| 5 years | 60,000 mi | $3,670 | $61 |
| 7 years | 84,000 mi | $4,405 | $52 |
| 10 years | 120,000 mi | $8,540 | $71 |
| 15 years | 180,000 mi | $12,210 | $68 |
Per-month can dip as the horizon lengthens - a major service lands in one year and then averages out across all the months after it. The left column is what you actually spend.
Beyond the schedule, the first big-ticket item this F350 is known for is VGT turbocharger sticking / failure from about 100,000 miles ($2,500-$4,500). It is a range, not a certainty - but it is the number to have in your head at the dealership.
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
Keeping it yourself, there is no cutoff - the table above runs to fifteen years. On fleet math, where a car has to keep earning, 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
Similar pickups
Running an F350 for income?
Carlyle scores the exact listing on cost per remaining mile and projected Turo income, so you know what this F350 earns before you buy it.
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