The Kubota M135GX 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.
ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible
Engine model
V6108-TI-CRS
Engine horsepower
135 hp (100.7 kW)
Engine displacement
6.1 L (373.8 cu in)
Coolant Capacity Comparison Chart
Coolant capacity comparison
This model
4 gal
Average
4 gal
Low
2 gal
High
8 gal
Engine horsepower comparison
This model
135 hp
Average
140 hp
Low
80 hp
High
240 hp
Engine displacement comparison
This model
6.1 L
Average
6 L
Low
3 L
High
10 L
Kubota M135GX Coolant and Engine Notes
Coolant capacity note
The Kubota M135GX coolant spec points to 4 gal (15 L). Do not rely on the radiator-only amount if the full cooling-system capacity is available
Radiator capacity note
For the Kubota M135GX, the captured radiator capacity is 4 gal (15 L). If you are doing a full drain, check the full cooling-system capacity too
Coolant type note
For the Kubota M135GX, coolant type matters as much as capacity. The clean captured value is ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible
Engine context note
Engine context for the Kubota M135GX: engine model V6108-TI-CRS, engine horsepower 135 hp (100.7 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: 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 Coolant Capacity FAQ
What is the Kubota M135GX coolant capacity?
The Kubota M135GX 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 M135GX?
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 M135GX?
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 M135GX is the coolant mix specified in the manual.
How often should I change coolant in the Kubota M135GX?
The captured coolant change interval for the Kubota M135GX is the service interval in the operator manual. If service history is unknown, changing it is usually smarter than guessing.
Why does the Kubota M135GX coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota M135GX, the supporting engine data is engine model V6108-TI-CRS, horsepower 135 hp (100.7 kW), and displacement 6.1 L (373.8 cu in).
Official information note
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.
