The Kubota B2301 coolant capacity is listed as 1.59 gal (6 L). It also lists coolant type ethylene glycol-based coolant and long-life coolant and antifreeze mix Kubota recommends a 50: 50 ethylene glycol-based coolant-to-water mix for the B2301 tractor.
Kubota B2301 Coolant Capacity
| Cooling system capacity | 1.59 gal (6 L) |
|---|---|
| Coolant type | ethylene glycol-based coolant and long-life coolant |
| Antifreeze mix | Kubota recommends a 50: 50 ethylene glycol-based coolant-to-water mix for the B2301 tractor |
| Engine horsepower | 22 hp (16.4 kW) |
| Engine displacement | 1.1 L (68.5 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota B2301 Coolant and Engine Notes
| Coolant capacity note | The Kubota B2301 coolant spec points to 1.59 gal (6 L). Do not rely on the radiator-only amount if the full cooling-system capacity is available |
|---|---|
| Coolant type note | The captured coolant type for the Kubota B2301 is ethylene glycol-based coolant and long-life coolant. Do not mix unknown coolant types unless the label and manual say they are compatible |
| Antifreeze mix note | The Kubota recommends a 50: 50 ethylene glycol-based coolant-to-water mix for the B2301 tractor mix gives the Kubota B2301 coolant system a sensible balance of freeze protection, boil protection and corrosion protection |
| Engine context note | The Kubota B2301 engine data captured here is engine horsepower 22 hp (16.4 kW) and displacement 1.1 L (68.5 cu in). Bigger engines usually need more coolant and more careful refill bleeding |
| Refill note | For a coolant change on the Kubota B2301, do not just dump in coolant and walk away. Fill slowly, run it up to temperature, cool it down and top up as needed |
Kubota B2301 Coolant Capacity FAQ
How much coolant does the Kubota B2301 take?
The main coolant amount captured for the Kubota B2301 is 1.59 gal (6 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 B2301?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota B2301, the captured coolant type is ethylene glycol-based coolant and long-life coolant.
What antifreeze mix does the Kubota B2301 use?
The captured antifreeze mix for the Kubota B2301 is Kubota recommends a 50: 50 ethylene glycol-based coolant-to-water mix for the B2301 tractor. A 50/50-style mix is the common practical answer unless your manual or climate calls for something different.
When should the Kubota B2301 coolant be replaced?
Use the service interval in the operator manual as the service guide. Coolant can look okay but still lose corrosion protection over time.
What engine specs affect Kubota B2301 coolant capacity?
The captured engine context is horsepower 22 hp (16.4 kW) and displacement 1.1 L (68.5 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.

