The Kubota M135GX-III coolant capacity is listed as 4 gal (15 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 M135GX-III Coolant Capacity
| Coolant capacity | 4 gal (15 L) |
|---|---|
| Coolant type | ethylene glycol-based coolant and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and distilled water mix |
| Engine model | V6108 |
| Engine horsepower | 143 hp (106.6 kW) |
| Engine displacement | 6.1 L (373.8 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota M135GX-III Coolant and Engine Notes
| Coolant capacity note | The headline cooling-system number for the Kubota M135GX-III is 4 gal (15 L). Buy enough coolant before opening the drain plug |
|---|---|
| Coolant type note | For the Kubota M135GX-III, coolant type matters as much as capacity. The clean captured value is ethylene glycol-based coolant and ASTM D3306 compatible |
| Antifreeze mix note | For the Kubota M135GX-III, the captured mix is 50/50 coolant and distilled 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 M135GX-III: engine model V6108, engine horsepower 143 hp (106.6 kW), and displacement 6.1 L (373.8 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | The practical service move for the Kubota M135GX-III: buy enough coolant for 4 gal (15 L), fill to spec, run the engine, then recheck the radiator and overflow bottle after cooling |
Kubota M135GX-III Coolant Capacity FAQ
How much coolant does the Kubota M135GX-III take?
The main coolant amount captured for the Kubota M135GX-III is 4 gal (15 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 M135GX-III?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota M135GX-III, the captured coolant type is ethylene glycol-based coolant and ASTM D3306 compatible.
What antifreeze mix does the Kubota M135GX-III use?
The captured antifreeze mix for the Kubota M135GX-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 M135GX-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 M135GX-III coolant capacity?
The captured engine context is engine model V6108, horsepower 143 hp (106.6 kW), and displacement 6.1 L (373.8 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.
