The Kubota M135X coolant capacity is listed as 4 gal (15 L). It also lists coolant type ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible and antifreeze mix 50/50 coolant and water mix.
Kubota M135X Coolant Capacity
| Coolant capacity | 4 gal (15 L) |
|---|---|
| Cooling system capacity | 4 gal (15 L) |
| Radiator capacity | 4 gal (15 L) |
| Coolant type | ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine horsepower | 135 hp (100.7 kW) |
| Engine displacement | 6.1 L (373.8 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota M135X Coolant and Engine Notes
| Coolant capacity note | The headline cooling-system number for the Kubota M135X is 4 gal (15 L). Buy enough coolant before opening the drain plug |
|---|---|
| Radiator capacity note | Radiator capacity is listed as 4 gal (15 L). The full cooling system can be higher because coolant also sits in the engine and hoses |
| Coolant type note | Use the right coolant formula for the Kubota M135X: ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible. Cheap wrong coolant is not a smart saving if it causes corrosion or deposits |
| Antifreeze mix note | The 50/50 coolant and water mix mix gives the Kubota M135X coolant system a sensible balance of freeze protection, boil protection and corrosion protection |
| Engine context note | The Kubota M135X engine data captured here is engine horsepower 135 hp (100.7 kW) and displacement 6.1 L (373.8 cu in). Bigger engines usually need more coolant and more careful refill bleeding |
| Refill note | Coolant changes are simple but easy to do sloppily. On the Kubota M135X, plan around 4 gal (15 L) and confirm the final level after air works out of the system |
Kubota M135X Coolant Capacity FAQ
What is the Kubota M135X coolant capacity?
The Kubota M135X coolant capacity is listed as 4 gal (15 L) for coolant capacity. Use this as the refill planning number and confirm the final level at the radiator or overflow bottle.
Can I use any coolant in the Kubota M135X?
No. Use ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible or a coolant that clearly matches the manual’s required spec. Wrong coolant can create corrosion, deposits or seal problems.
Is premixed coolant okay for the Kubota M135X?
Premixed coolant can be fine if it matches ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible and the required mix. The captured mix for the Kubota M135X is 50/50 coolant and water mix.
How often should I change coolant in the Kubota M135X?
The captured coolant change interval for the Kubota M135X is the service interval in the operator manual. If service history is unknown, changing it is usually smarter than guessing.
What engine specs affect Kubota M135X coolant capacity?
The captured engine context is horsepower 135 hp (100.7 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.
