The Kubota XB-1 coolant capacity is listed as 2.3 gal (8.7 L). It also lists coolant type ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible and antifreeze mix 50/50 coolant and water mix.
Kubota XB-1 Coolant Capacity
| Coolant capacity | 2.3 gal (8.7 L) |
|---|---|
| Cooling system capacity | 2.17 gal (8.2 L) |
| Radiator capacity | 2.17 gal (8.2 L) |
| Coolant type | ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine horsepower | 11.8 hp (8.8 kW) |
| Engine displacement | 0.8 L (48.8 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota XB-1 Coolant and Engine Notes
| Coolant capacity note | The headline cooling-system number for the Kubota XB-1 is 2.3 gal (8.7 L). Buy enough coolant before opening the drain plug |
|---|---|
| Radiator capacity note | For the Kubota XB-1, the captured radiator capacity is 2.17 gal (8.2 L). If you are doing a full drain, check the full cooling-system capacity too |
| Coolant type note | The captured coolant type for the Kubota XB-1 is ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible. Do not mix unknown coolant types unless the label and manual say they are compatible |
| Antifreeze mix note | For the Kubota XB-1, the captured mix is 50/50 coolant and water mix. Straight water is not the right long-term answer unless you are only flushing the system |
| Engine context note | Engine context for the Kubota XB-1: engine horsepower 11.8 hp (8.8 kW) and displacement 0.8 L (48.8 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | For a coolant change on the Kubota XB-1, 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 XB-1 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota XB-1?
The Kubota XB-1 cooling system capacity is shown as 2.3 gal (8.7 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota XB-1?
Use ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible. The blunt rule is simple: match the manual’s coolant spec and do not mix unknown coolant formulas.
Should I use straight water in the Kubota XB-1?
Not for normal long-term use. The Kubota XB-1 should use 50/50 coolant and water mix or the manual’s specified coolant mix so the system gets corrosion, freeze and boil protection.
Does old coolant matter in the Kubota XB-1?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota XB-1 is the service interval in the operator manual.
What engine specs affect Kubota XB-1 coolant capacity?
The captured engine context is horsepower 11.8 hp (8.8 kW) and displacement 0.8 L (48.8 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.
