The 2022 F-350 Super Duty represents Ford's latest heavy-duty platform with two vastly different engine personalities. The 6.7L Power Stroke diesel remains the workhorse with known cooling and emissions quirks, while the 7.3L Godzilla gas engine is showing early signs of piston/ring failures under heavy load — unusual for such a new design.
6.7L Power Stroke Transmission Oil Cooler Failure
Occasional · high severityTypical onset: 60,000-100,000 mi
Symptoms: Transmission fluid mixing with engine coolant (milky fluid in either system), Overheating transmission under load or towing, White residue in coolant overflow tank, Transmission slipping or delayed shifts after cooler breach
Fix: Replace transmission oil cooler assembly, flush both cooling and transmission systems completely, replace filters. Critical to catch early before catastrophic transmission damage. 6-8 hours labor including flush procedures.
Estimated cost: $1,800-3,200
7.3L Godzilla Piston Ring Failure and Cylinder Scoring
Rare · high severityTypical onset: 40,000-80,000 mi
Symptoms: Excessive oil consumption (1 qt per 500-800 miles), Blue smoke on cold start or under load, Loss of power, particularly under sustained towing, Metallic noise from crankcase in severe cases, Check engine light with misfire codes or low compression
Fix: Complete engine teardown required. In many cases, cylinder wall scoring necessitates short block replacement rather than just rings. Ford has issued TSB but coverage is limited. 25-35 hours labor for short block swap, more if full rebuild needed.
Estimated cost: $8,500-15,000
6.7L Power Stroke Fuel Filter Housing and Water Separator Issues
Common · medium severitySymptoms: Hard starting, especially in cold weather, Fuel filter restriction warning light, Loss of power or limp mode under acceleration, Fuel leaking from filter housing (o-ring degradation)
Fix: Replace fuel filter assembly and water separator every 15,000-20,000 miles under heavy use (Ford spec is often too optimistic). Housing itself may crack or develop leaks requiring full replacement. 1.5-2 hours labor for routine service, 3-4 hours for housing replacement.
Estimated cost: $150-400 for filters; $800-1,200 for housing
Transmission Mount Failure (10R140 Transmission)
Occasional · medium severityTypical onset: 50,000-90,000 mi
Symptoms: Clunking or banging when shifting from park to drive/reverse, Excessive driveline vibration at highway speeds, Visible transmission sag or misalignment when inspected from below, Harsh shifts or transmission noise under acceleration
Fix: Replace transmission mount(s) — the rear mount on the 10R140 takes tremendous abuse in towing applications. Requires transmission support and removal of crossmember. 2-3 hours labor.
Estimated cost: $400-700
6.7L Power Stroke EGR Cooler and Valve Sticking
Occasional · medium severityTypical onset: 80,000-120,000 mi
Symptoms: Check engine light with P0401 or P0404 codes (EGR flow insufficient), Rough idle or stalling when coming to a stop, White smoke from exhaust during regen cycles, Loss of power and increased soot buildup in oil
Fix: EGR valve cleaning sometimes works temporarily, but cooler replacement is often needed due to carbon buildup and internal restriction. Valve and cooler replacement together recommended. 5-7 hours labor.
Estimated cost: $1,500-2,800
DEF System Heater and Quality Sensor Failures (6.7L)
Common · medium severitySymptoms: DEF system fault warnings on dash, Speed derate warning (vehicle will limit speed after certain countdown), Poor DEF consumption or no consumption indicated, DEF freezing issues even in moderate cold weather
Fix: DEF tank heater element or quality sensor replacement. Critical because Ford implements speed derate if not addressed. Must use quality DEF and avoid off-brand fluids. 2-4 hours labor depending on component.
Estimated cost: $600-1,400
Solid platform if maintained properly, but the 7.3L piston issue is concerning for a 2022 — stick with the proven 6.7L diesel if buying used and budget for fuel system and emissions maintenance.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.