2014 Kenworth W900 Coolant Capacity & Type
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The 2014 Kenworth W900 typically holds between 60 to 75 quarts (approximately 57 to 71 liters) of coolant, depending on the specific engine and cooling system configuration.
Quick Answer
- Total Cooling System Capacity: 60-75 quarts (57-71 liters)
- OEM Coolant Spec: Typically a heavy-duty, extended life silicate-free Organic Acid Technology (OAT) or Hybrid Organic Acid Technology (HOAT) coolant. Consult your engine manufacturer’s specifications, such as Cummins CES 14603 or Detroit Diesel DFS 93K217.
- Mix Ratio: 50/50 prediluted or 50% concentrate mixed with 50% distilled water.
Capacity by Engine Option
Due to the wide range of engine options in a 2014 Kenworth W900, cooling system capacities can vary significantly. Here’s a general overview:
| Engine Type | Approximate Capacity (Quarts) | Approximate Capacity (Liters) |
|---|---|---|
| Cummins ISX15 | 60-70 | 57-66 |
| PACCAR MX-13 | 65-75 | 61-71 |
| Detroit Diesel DD13/DD15/DD16 | 60-70 | 57-66 |
Always refer to your specific engine owner’s manual for the precise coolant capacity and type recommended for your truck.
Flush Interval
Heavy-duty trucks like the Kenworth W900 have specific flush intervals to ensure optimal cooling system performance and longevity of engine components. These intervals are typically much longer than those for passenger vehicles due to the robust nature of heavy-duty coolants.
- Normal Duty: Typically 300,000 to 600,000 miles, or 4,000 to 8,000 hours, or 3-6 years, whichever comes first.
- Severe Duty (e.g., extreme temperatures, heavy hauling, frequent idling): Consider flushing at the lower end of the normal duty range, or more frequently if coolant analysis indicates degradation.
Regular coolant analysis is highly recommended for heavy-duty applications to determine the actual condition of the coolant and if supplemental coolant additives (SCAs) are needed or if a flush is prematurely required. Many heavy-duty coolants are designed for extended life, often requiring only annual testing and the addition of SCAs or an extender at specific intervals.
How to Refill & Bleed
Properly refilling and bleeding the cooling system on a Kenworth W900 is crucial to prevent air pockets, which can lead to localized hotspots and engine damage. This is often a more involved process than on smaller vehicles due to the system
More specs for the 2014 Kenworth W900
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
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
2014 Kenworth W900 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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