The Kubota Z122E coolant capacity is listed as 1.65 gal (6.2 L). It also lists coolant type ethylene glycol-based coolant and Kubota Genuine Coolant and antifreeze mix 50/50 coolant and water mix.
Kubota Z122E Coolant Capacity
| Coolant capacity | 1.65 gal (6.2 L) |
|---|---|
| Coolant type | ethylene glycol-based coolant and Kubota Genuine Coolant |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine horsepower | 22 hp (16.4 kW) |
| Engine displacement | 0.7 L (44.2 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota Z122E Coolant and Engine Notes
| Coolant capacity note | The headline cooling-system number for the Kubota Z122E is 1.65 gal (6.2 L). Buy enough coolant before opening the drain plug |
|---|---|
| Coolant type note | The captured coolant type for the Kubota Z122E is ethylene glycol-based coolant and Kubota Genuine Coolant. Do not mix unknown coolant types unless the label and manual say they are compatible |
| Antifreeze mix note | For the Kubota Z122E, 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 Z122E: engine horsepower 22 hp (16.4 kW) and displacement 0.7 L (44.2 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | For a coolant change on the Kubota Z122E, 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 Z122E Coolant Capacity FAQ
What is the cooling system capacity of the Kubota Z122E?
The Kubota Z122E cooling system capacity is shown as 1.65 gal (6.2 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota Z122E?
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 Z122E?
Not for normal long-term use. The Kubota Z122E 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 Z122E?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota Z122E is the service interval in the operator manual.
Why does the Kubota Z122E coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota Z122E, the supporting engine data is horsepower 22 hp (16.4 kW) and displacement 0.7 L (44.2 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.
