The Kubota M125GX-III coolant capacity is listed as 4.2 gal (15.9 L). It also lists coolant type ethylene glycol-based coolant and ASTM D3306 compatible and antifreeze mix 50/50 coolant and distilled water mix.
Kubota M125GX-III Coolant Capacity
| Coolant capacity | 4.2 gal (15.9 L) |
|---|---|
| Coolant type | ethylene glycol-based coolant and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and distilled water mix |
| Engine horsepower | 133 hp (99.2 kW) |
| Engine displacement | 6.1 L (373.7 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota M125GX-III Coolant and Engine Notes
| Coolant capacity note | For service planning, the Kubota M125GX-III should be treated as 4.2 gal (15.9 L) coolant capacity. That is a larger cooling system where you should buy extra coolant before draining it |
|---|---|
| Coolant type note | The captured coolant type for the Kubota M125GX-III is ethylene glycol-based coolant and ASTM D3306 compatible. Do not mix unknown coolant types unless the label and manual say they are compatible |
| Antifreeze mix note | The Kubota M125GX-III antifreeze mix is listed as 50/50 coolant and distilled water mix. That is the normal protection range for freezing, boiling and corrosion control |
| Engine context note | For the Kubota M125GX-III, the supporting engine specs are engine horsepower 133 hp (99.2 kW) and displacement 6.1 L (373.7 cu in). Use them as context beside the coolant capacity, not as a replacement for the manual |
| Refill note | For a coolant change on the Kubota M125GX-III, 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 M125GX-III Coolant Capacity FAQ
How much coolant does the Kubota M125GX-III take?
The main coolant amount captured for the Kubota M125GX-III is 4.2 gal (15.9 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 M125GX-III?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota M125GX-III, the captured coolant type is ethylene glycol-based coolant and ASTM D3306 compatible.
What antifreeze mix does the Kubota M125GX-III use?
The captured antifreeze mix for the Kubota M125GX-III is 50/50 coolant and distilled 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 M125GX-III 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 M125GX-III coolant capacity?
The captured engine context is horsepower 133 hp (99.2 kW) and displacement 6.1 L (373.7 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.
