2006 FORD F-250

Typical onset: 80,000-150,000 mi

Symptoms: white smoke from exhaust, coolant loss with no visible leaks, overheating under load, milky oil on dipstick, rough idle when cold

Fix: Head gasket job on the 6.0L requires cab removal or pulling the engine. ARP head studs are mandatory to prevent repeat failure. 20-30 labor hours depending on shop method. Always includes EGR cooler delete and oil cooler upgrade if owner is smart.

Estimated cost: $4,000-7,000

Typical onset: 60,000-120,000 mi

Symptoms: loss of coolant into exhaust, steam from tailpipe, rough running, check engine light with P0401 or P0404 codes, coolant in intake manifold

Fix: EGR cooler ruptures internally, dumping coolant into the intake and exhaust. Coolant gets into cylinders and can hydro-lock the engine if ignored. Most owners delete the EGR system entirely with aftermarket kit and tuner. 8-12 hours labor for replacement or delete.

Estimated cost: $1,800-3,500

Typical onset: 70,000-130,000 mi

Symptoms: oil in coolant or coolant in oil, overheating, low oil pressure, sludgy coolant reservoir, engine running hot under towing

Fix: The factory oil cooler sits in the valley and fails internally, mixing oil and coolant. Requires cab-off or engine removal to access. Bulletproof Diesel and other aftermarket options are mandatory replacements. 18-25 hours labor, often done during head gasket job.

Estimated cost: $3,000-5,500

Typical onset: 100,000-180,000 mi

Symptoms: long crank or no-start when cold, rough idle, lack of power, misfires, white smoke at startup, stalling

Fix: The FICM provides 48V to the injectors and fails when internal solder joints crack. Starts as hard cold starts, progresses to no-start. Can be repaired with rework or replaced. 2-3 hours labor for replacement.

Estimated cost: $800-1,800

Typical onset: 80,000-140,000 mi

Symptoms: transmission fluid leak at radiator, transmission slipping or delayed engagement, burnt transmission fluid smell, coolant mixing with ATF

Fix: Internal transmission cooler in the radiator fails, allowing coolant into the transmission (the dreaded 'strawberry milkshake of death'). Requires radiator replacement, transmission flush or rebuild if contamination is severe, and all cooler lines. 4-6 hours for cooler/radiator, add 15-20 hours if trans needs rebuild.

Estimated cost: $800-1,200 (cooler only), $2,500-4,500 (if trans damaged)

Typical onset: 120,000-200,000 mi

Symptoms: lack of boost and power, black smoke under acceleration, whistling or grinding noise from turbo, oil leaking from turbo seals, check engine light with underboost codes

Fix: Variable-vane turbo can stick, leak oil, or fail due to oil contamination from other 6.0L issues. Unison ring sticking is common. 6-10 hours labor for removal and replacement.

Estimated cost: $1,500-3,000

Symptoms: sudden misfire, loud hissing from engine bay, check engine light, loss of power, rough idle

Fix: Two-piece spark plugs can break during removal, and threads in aluminum heads can strip, ejecting the plug. Time-Sert thread repair kit required, 2-4 hours per plug depending on access. Preventive: never over-torque plugs, use anti-seize.

Estimated cost: $300-600 per hole

Typical onset: 70,000-120,000 mi

Symptoms: clunking over bumps, wandering steering, uneven tire wear, play in front wheels when jacked up

Fix: Upper and lower ball joints wear, especially with oversized tires or plow use. Requires full replacement of control arms or press-in joints. 4-6 hours for both sides.

Estimated cost: $800-1,400