The Kubota BX1860 coolant capacity is listed as 1.19 gal (4.5 L). It also lists coolant type ethylene glycol-based coolant and ASTM D3306 compatible.
Kubota BX1860 Coolant Capacity
| Cooling system capacity | 1.19 gal (4.5 L) |
|---|---|
| Coolant type | ethylene glycol-based coolant and ASTM D3306 compatible |
| Coolant change interval | every 700 hours |
| Engine horsepower | 18 hp (13.4 kW) |
| Engine displacement | 0.7 L (43.9 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota BX1860 Coolant and Engine Notes
| Coolant capacity note | The Kubota BX1860’s key coolant figure here is 1.19 gal (4.5 L) for cooling system capacity. Use that before buying coolant or draining the system |
|---|---|
| Coolant type note | For the Kubota BX1860, coolant type matters as much as capacity. The clean captured value is ethylene glycol-based coolant and ASTM D3306 compatible |
| Coolant change interval note | For the Kubota BX1860, the service interval is listed as every 700 hours. Time matters too, not just engine hours |
| Engine context note | For the Kubota BX1860, the supporting engine specs are engine horsepower 18 hp (13.4 kW) and displacement 0.7 L (43.9 cu in). Use them as context beside the coolant capacity, not as a replacement for the manual |
| Refill note | The practical service move for the Kubota BX1860: buy enough coolant for 1.19 gal (4.5 L), fill to spec, run the engine, then recheck the radiator and overflow bottle after cooling |
Kubota BX1860 Coolant Capacity FAQ
How much coolant does the Kubota BX1860 take?
The main coolant amount captured for the Kubota BX1860 is 1.19 gal (4.5 L). Buy a little extra so you can top up after the engine warms up and cools down.
Does coolant type matter on the Kubota BX1860?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota BX1860, the captured coolant type is ethylene glycol-based coolant and ASTM D3306 compatible.
What antifreeze mix does the Kubota BX1860 use?
The captured antifreeze mix for the Kubota BX1860 is the coolant mix specified in the manual. A 50/50-style mix is the common practical answer unless your manual or climate calls for something different.
When should the Kubota BX1860 coolant be replaced?
Use every 700 hours as the service guide. Coolant can look okay but still lose corrosion protection over time.
What engine specs affect Kubota BX1860 coolant capacity?
The captured engine context is horsepower 18 hp (13.4 kW) and displacement 0.7 L (43.9 cu in). Engine size is one reason coolant capacity changes between tractors.
Mistakes do happen. Tractor coolant specs can change by year, market, engine, radiator, cab/heater setup and service procedure. Please check the operator manual, decal information and official kubotausa.com website for official information before draining or refilling the cooling system.

