The Kubota B72 coolant capacity is listed as 1.59 gal (6 L). It also lists coolant type ethylene glycol-based coolant and ASTM D3306 compatible and antifreeze mix 50/50 coolant and water mix.
Kubota B72 Coolant Capacity
| Coolant capacity | 1.59 gal (6 L) |
|---|---|
| Cooling system capacity | 1.59 gal (6 L) |
| Radiator capacity | 1.59 gal (6 L) |
| Coolant type | ethylene glycol-based coolant and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine model | D1105 |
| Engine horsepower | 16.2 hp (12.1 kW) |
| Engine displacement | 0.9 L (54.9 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota B72 Coolant and Engine Notes
| Coolant capacity note | The Kubota B72’s key coolant figure here is 1.59 gal (6 L) for coolant capacity. Use that before buying coolant or draining the system |
|---|---|
| Radiator capacity note | Radiator capacity is listed as 1.59 gal (6 L). The full cooling system can be higher because coolant also sits in the engine and hoses |
| Coolant type note | Coolant type for the Kubota B72 is listed as ethylene glycol-based coolant and ASTM D3306 compatible. The safest move is to use coolant that matches the manual’s spec rather than mixing random formulas |
| Antifreeze mix note | The 50/50 coolant and water mix mix gives the Kubota B72 coolant system a sensible balance of freeze protection, boil protection and corrosion protection |
| Engine context note | The Kubota B72 engine data captured here is engine model D1105, engine horsepower 16.2 hp (12.1 kW), and displacement 0.9 L (54.9 cu in). Bigger engines usually need more coolant and more careful refill bleeding |
| Refill note | When refilling the Kubota B72, use 1.59 gal (6 L) as the planning number and 50/50 coolant and water mix as the mixture guide. Recheck the level after the thermostat opens |
Kubota B72 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota B72?
The Kubota B72 cooling system capacity is shown as 1.59 gal (6 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota B72?
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 B72?
Not for normal long-term use. The Kubota B72 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 B72?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota B72 is the service interval in the operator manual.
Why does the Kubota B72 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota B72, the supporting engine data is engine model D1105, horsepower 16.2 hp (12.1 kW), and displacement 0.9 L (54.9 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.
