The Kubota GT-3 coolant capacity is listed as 1.73 gal (6.5 L). It also lists coolant type ethylene glycol-based coolant and antifreeze mix 50/50 coolant and water mix.
Kubota GT-3 Coolant Capacity
| Cooling system capacity | 1.73 gal (6.5 L) |
|---|---|
| Radiator capacity | 1.64 gal (6.2 L) |
| Coolant type | ethylene glycol-based coolant |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine model | D1105 |
| Engine horsepower | 20.7 hp (15.4 kW) |
| Engine displacement | 1.4 L (85.4 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota GT-3 Coolant and Engine Notes
| Coolant capacity note | The Kubota GT-3’s key coolant figure here is 1.73 gal (6.5 L) for cooling system capacity. Use that before buying coolant or draining the system |
|---|---|
| Radiator capacity note | For the Kubota GT-3, the captured radiator capacity is 1.64 gal (6.2 L). If you are doing a full drain, check the full cooling-system capacity too |
| Coolant type note | Coolant type for the Kubota GT-3 is listed as ethylene glycol-based coolant. The safest move is to use coolant that matches the manual’s spec rather than mixing random formulas |
| Antifreeze mix note | For the Kubota GT-3, 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 GT-3: engine model D1105, engine horsepower 20.7 hp (15.4 kW), and displacement 1.4 L (85.4 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | When refilling the Kubota GT-3, use 1.73 gal (6.5 L) as the planning number and 50/50 coolant and water mix as the mixture guide. Recheck the level after the thermostat opens |
Kubota GT-3 Coolant Capacity FAQ
How much coolant does the Kubota GT-3 take?
The main coolant amount captured for the Kubota GT-3 is 1.73 gal (6.5 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 GT-3?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota GT-3, the captured coolant type is ethylene glycol-based coolant.
What antifreeze mix does the Kubota GT-3 use?
The captured antifreeze mix for the Kubota GT-3 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 GT-3 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.
What engine specs affect Kubota GT-3 coolant capacity?
The captured engine context is engine model D1105, horsepower 20.7 hp (15.4 kW), and displacement 1.4 L (85.4 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.
