The Kubota BX2680 coolant capacity is listed as 6.9 gal (26.1 L). It also lists coolant type ethylene glycol-based coolant and ASTM D3306 compatible and antifreeze mix 50/50 coolant and water mix.
Kubota BX2680 Coolant Capacity
| Coolant capacity | 6.9 gal (26.1 L) |
|---|---|
| Radiator capacity | 6.9 gal (26.1 L) |
| Coolant type | ethylene glycol-based coolant and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine model | D1005 |
| Engine horsepower | 24.8 hp (18.5 kW) |
| Engine displacement | 1 L (61.1 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota BX2680 Coolant and Engine Notes
| Coolant capacity note | For service planning, the Kubota BX2680 should be treated as 6.9 gal (26.1 L) coolant capacity. That is a big cooling system where under-buying coolant gets annoying fast |
|---|---|
| Radiator capacity note | For the Kubota BX2680, the captured radiator capacity is 6.9 gal (26.1 L). If you are doing a full drain, check the full cooling-system capacity too |
| Coolant type note | Use the right coolant formula for the Kubota BX2680: ethylene glycol-based coolant and ASTM D3306 compatible. Cheap wrong coolant is not a smart saving if it causes corrosion or deposits |
| Antifreeze mix note | For the Kubota BX2680, 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 BX2680: engine model D1005, engine horsepower 24.8 hp (18.5 kW), and displacement 1 L (61.1 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | Coolant changes are simple but easy to do sloppily. On the Kubota BX2680, plan around 6.9 gal (26.1 L) and confirm the final level after air works out of the system |
Kubota BX2680 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota BX2680?
The Kubota BX2680 cooling system capacity is shown as 6.9 gal (26.1 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota BX2680?
Use ethylene glycol-based 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 BX2680?
Not for normal long-term use. The Kubota BX2680 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 BX2680?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota BX2680 is the service interval in the operator manual.
Why does the Kubota BX2680 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota BX2680, the supporting engine data is engine model D1005, horsepower 24.8 hp (18.5 kW), and displacement 1 L (61.1 cu in).
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.
