2023 Kenworth T680 Oil Capacity & Filter
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The 2023 Kenworth T680's oil capacity depends on its specific engine, but it typically ranges from 38 to 44 quarts (36 to 41.6 liters) for the popular PACCAR MX-13 engine. This guide provides comprehensive information on oil capacity, recommended oil types, filter part numbers, and maintenance tips for your 2023 Kenworth T680.
Quick Answer
Here's a quick reference for the most common engine in the 2023 Kenworth T680:
- Engine: PACCAR MX-13
- Oil Capacity: 44 quarts (41.6 liters)
- Recommended Oil Weight: SAE 10W-30 (for most operating temperatures)
- Oil Specification: API CK-4 or FA-4 (consult your owner's manual for specific PACCAR recommendations)
- Oil Filter OEM Part Number: Consult dealer for specific PACCAR MX-13 filter.
- Aftermarket Cross-References:
- Fram: Consult Fram catalog for heavy-duty applications.
- Wix: Consult Wix catalog for heavy-duty applications.
- Mobil 1: Consult Mobil 1 filter guide for heavy-duty applications.
Capacity by Engine Option
The Kenworth T680 can be equipped with various engines. Here's a breakdown of common engine options and their approximate oil capacities:
| Engine | Oil Capacity (Quarts) | Oil Capacity (Liters) |
|---|---|---|
| PACCAR MX-13 | 44 | 41.6 |
| Cummins X15 | 40-42 | 37.9-39.7 |
Always consult your owner's manual for the precise oil capacity for your specific engine configuration.
Oil Change Interval
Maintaining the correct oil change interval is crucial for the longevity of your Kenworth T680's engine.
- Normal Duty: Typically every 35,000 to 50,000 miles or 400-500 hours, whichever comes first. This can vary based on oil analysis and engine type.
- Severe Duty: For vehicles operating under heavy loads, frequent idling, extreme temperatures, or dusty conditions, oil change intervals may be reduced to 20,000 to 30,000 miles or fewer hours. Many fleets use oil analysis to determine optimal severe duty intervals.
Always refer to your Kenworth T680 owner's manual and engine manufacturer's recommendations for the most accurate oil change intervals.
Drain Plug Torque
Properly torquing the drain plug is essential to prevent leaks and damage.
- PACCAR MX-13 Engine Drain Plug Torque: Consult your Kenworth service manual or dealer for the precise torque specification. Heavy-duty truck drain plugs typically range from 50-80 ft-lbs.
- Crush Washer: Always replace the crush washer (or gasket) with a new one during every oil change. This ensures a proper seal and prevents leaks.
How to Change the Oil
Changing the oil on a heavy-duty truck like the Kenworth T680 requires specialized tools and expertise. If you
More specs for the 2023 Kenworth T680
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
Maintenance & repair guides
2023 Kenworth T680 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 2026-06-23.