The Kubota ZD331 coolant capacity is listed as 2.88 gal (10.9 L). It also lists coolant type ethylene glycol-based coolant and Kubota Genuine Coolant and antifreeze mix 50/50 coolant and water mix.
Kubota ZD331 Coolant Capacity
| Cooling system capacity | 2.88 gal (10.9 L) |
|---|---|
| Radiator capacity | 2.88 gal (10.9 L) |
| Coolant type | ethylene glycol-based coolant and Kubota Genuine Coolant |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine model | V3307-CR-TI-E5 |
| Engine horsepower | 31 hp (23.1 kW) |
| Engine displacement | 1.3 L (77 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota ZD331 Coolant and Engine Notes
| Coolant capacity note | The Kubota ZD331 coolant spec points to 2.88 gal (10.9 L). Do not rely on the radiator-only amount if the full cooling-system capacity is available |
|---|---|
| Radiator capacity note | Radiator capacity is listed as 2.88 gal (10.9 L). The full cooling system can be higher because coolant also sits in the engine and hoses |
| Coolant type note | For the Kubota ZD331, coolant type matters as much as capacity. The clean captured value is ethylene glycol-based coolant and Kubota Genuine Coolant |
| Antifreeze mix note | The 50/50 coolant and water mix mix gives the Kubota ZD331 coolant system a sensible balance of freeze protection, boil protection and corrosion protection |
| Engine context note | The Kubota ZD331 engine data captured here is engine model V3307-CR-TI-E5, engine horsepower 31 hp (23.1 kW), and displacement 1.3 L (77 cu in). Bigger engines usually need more coolant and more careful refill bleeding |
| Refill note | The practical service move for the Kubota ZD331: buy enough coolant for 2.88 gal (10.9 L), fill to spec, run the engine, then recheck the radiator and overflow bottle after cooling |
Kubota ZD331 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota ZD331?
The Kubota ZD331 cooling system capacity is shown as 2.88 gal (10.9 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota ZD331?
Use ethylene glycol-based coolant and Kubota Genuine Coolant. 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 ZD331?
Not for normal long-term use. The Kubota ZD331 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 ZD331?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota ZD331 is the service interval in the operator manual.
What engine specs affect Kubota ZD331 coolant capacity?
The captured engine context is engine model V3307-CR-TI-E5, horsepower 31 hp (23.1 kW), and displacement 1.3 L (77 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.
