2015 Honda Odyssey Coolant Capacity & Type
All you need to know about your minivan
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The 2015 Honda Odyssey holds approximately 7.9 US quarts (7.5 liters) of coolant.
Quick Answer
- Total Cooling System Capacity: 7.9 US Quarts (7.5 Liters)
- OEM Coolant Spec: Honda Long-Life Antifreeze/Coolant Type 2 (Blue, Silicate-Free HOAT or P-OAT)
- Mix Ratio: 50/50 Pre-Diluted (do not add water)
Capacity by Engine Option
All 2015 Honda Odyssey models came with a single engine option, the 3.5L V6 (J35Y6).
| Engine | Coolant Capacity (US Quarts) | Coolant Capacity (Liters) |
|---|---|---|
| 3.5L V6 (J35Y6) | 7.9 | 7.5 |
Flush Interval
Honda recommends the first coolant flush at 10 years or 120,000 miles, whichever comes first. Subsequent flushes are recommended every 5 years or 60,000 miles.
- Normal Duty: 10 years/120,000 miles (first flush), then 5 years/60,000 miles
- Severe Duty: 5 years/60,000 miles
How to Refill & Bleed
Properly refilling and bleeding the cooling system on your 2015 Honda Odyssey is crucial to prevent air pockets that can lead to overheating. Always perform this procedure on a cool engine.
- Drain: With the engine cool, place a drain pan under the radiator. Open the radiator drain plug (usually located on the bottom of the radiator). Remove the radiator cap to speed up draining. Once drained, close the plug securely.
- Refill: Pour the Honda Long-Life Antifreeze/Coolant Type 2 (pre-diluted) slowly into the radiator filler neck until it reaches the top. Fill the reservoir tank to the "MAX" line.
- Bleed Air: Leave the radiator cap off. Start the engine and let it run with the heater on full blast (hot) and the fan on low. This helps open the heater core valve and circulates coolant. Squeeze the upper and lower radiator hoses several times to help dislodge air bubbles.
- Monitor: As the engine warms up, you will see air bubbles rise to the surface of the coolant in the radiator neck. Continue to add coolant as the level drops. Run the engine until the cooling fan cycles on and off at least twice, indicating the thermostat has opened fully.
- Final Touches: Once no more bubbles appear and the cooling fan has cycled, top off the radiator, install the cap, and ensure the reservoir is at the "MAX" line. Drive the vehicle, and recheck the coolant level in the reservoir after the engine has cooled completely.
*Note: The 2015 Honda Odyssey generally self-bleeds well with this method. There isn
More specs for the 2015 Honda Odyssey
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
2015 Honda Odyssey 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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