The Kubota GB20 coolant capacity is listed as 2.2 gal (8.3 L). It also lists coolant type ethylene glycol-based coolant and ASTM D3306 compatible and antifreeze mix 50/50 coolant and water mix.
Kubota GB20 Coolant Capacity
| Coolant capacity | 2.2 gal (8.3 L) |
|---|---|
| Coolant type | ethylene glycol-based coolant and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine horsepower | 19 hp (14.2 kW) |
| Engine displacement | 1.1 L (68.5 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota GB20 Coolant and Engine Notes
| Coolant capacity note | For the Kubota GB20, 2.2 gal (8.3 L) is the main coolant capacity captured. Use it as a refill planning number, then confirm the final level at the machine |
|---|---|
| Coolant type note | Coolant type for the Kubota GB20 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 Kubota GB20 antifreeze mix is listed as 50/50 coolant and water mix. That is the normal protection range for freezing, boiling and corrosion control |
| Engine context note | For the Kubota GB20, the supporting engine specs are engine horsepower 19 hp (14.2 kW) and displacement 1.1 L (68.5 cu in). Use them as context beside the coolant capacity, not as a replacement for the manual |
| Refill note | When refilling the Kubota GB20, use 2.2 gal (8.3 L) as the planning number and 50/50 coolant and water mix as the mixture guide. Recheck the level after the thermostat opens |
Kubota GB20 Coolant Capacity FAQ
How much coolant does the Kubota GB20 take?
The main coolant amount captured for the Kubota GB20 is 2.2 gal (8.3 L). Buy a little extra so you can top up after the engine warms up and cools down.
Does coolant type matter on the Kubota GB20?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota GB20, the captured coolant type is ethylene glycol-based coolant and ASTM D3306 compatible.
What antifreeze mix does the Kubota GB20 use?
The captured antifreeze mix for the Kubota GB20 is 50/50 coolant and water mix. A 50/50-style mix is the common practical answer unless your manual or climate calls for something different.
When should the Kubota GB20 coolant be replaced?
Use the service interval in the operator manual as the service guide. Coolant can look okay but still lose corrosion protection over time.
Why does the Kubota GB20 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota GB20, the supporting engine data is horsepower 19 hp (14.2 kW) and displacement 1.1 L (68.5 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.
