2021 Ford F-350 Super Duty Oil Capacity & Filter Guide
Your complete guide to oil specs and changes for the 6.2L V8, 7.3L V8, and 6.7L Power Stroke.
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The 2021 Ford F-350 Super Duty takes 7.3 quarts (6.9 liters) of 5W-30 motor oil for the 6.2L V8 engine, 7.3 quarts (6.9 liters) of 5W-30 motor oil for the 7.3L V8 engine, and 13.0 quarts (12.3 liters) of 10W-30 motor oil for the 6.7L Power Stroke V8 Diesel engine.
Quick Answer
Here's a quick reference for your 2021 Ford F-350 Super Duty:
-
6.2L V8:
- Oil Capacity: 7.3 quarts (6.9 liters)
- Recommended Oil Weight: 5W-30
- Oil Spec: WSS-M2C946-B1 (API SN PLUS or higher)
- Oil Filter (OEM): FL-820S
- Oil Filter Cross-Reference:
- Fram: PH2
- Wix: 51372
- Mobil 1: M1-210A
-
7.3L V8 "Godzilla":
- Oil Capacity: 7.3 quarts (6.9 liters)
- Recommended Oil Weight: 5W-30
- Oil Spec: WSS-M2C946-B1 (API SN PLUS or higher)
- Oil Filter (OEM): FL-2124
- Oil Filter Cross-Reference:
- Fram: XG12019
- Wix: WL10060
- Mobil 1: M1-212A
-
6.7L Power Stroke V8 Diesel:
- Oil Capacity: 13.0 quarts (12.3 liters)
- Recommended Oil Weight: 10W-30
- Oil Spec: WSS-M2C171-F1 (API CK-4)
- Oil Filter (OEM): FL-2124-FP
- Oil Filter Cross-Reference:
- Fram: CH12670
- Wix: WL10010XP
- Mobil 1: M1C-153A
Capacity by Engine Option
| Engine | Oil Capacity (Quarts) | Oil Capacity (Liters) | Recommended Oil Weight | Oil Spec |
|---|---|---|---|---|
| 6.2L V8 | 7.3 | 6.9 | 5W-30 | WSS-M2C946-B1 |
| 7.3L V8 "Godzilla" | 7.3 | 6.9 | 5W-30 | WSS-M2C946-B1 |
| 6.7L Power Stroke V8 Diesel | 13.0 | 12.3 | 10W-30 | WSS-M2C171-F1 |
Oil Change Interval
Ford recommends the following oil change intervals for the 2021 F-350 Super Duty:
- Normal Duty: Every 7,500 to 10,000 miles or 6 months, whichever comes first.
- Severe Duty: Every 5,000 miles or 6 months, whichever comes first.
Severe duty conditions include frequent towing, heavy loads, extensive idling, dusty conditions, or extreme temperatures. If your driving habits include any of these, it
More specs for the 2021 Ford F-350 Super Duty
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
2000 F-350 Super Duty
2001 F-350 Super Duty
2002 F-350 Super Duty
2003 F-350 Super Duty
2004 F-350 Super Duty
2005 F-350 Super Duty
Maintenance & repair guides
2021 Ford F-350 Super Duty Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-06-26.