The Kubota M125X coolant capacity is listed as 3.6 gal (13.6 L). It also lists coolant type ethylene glycol-based coolant and Kubota Genuine Coolant.
Coolant capacity3.6 gal (13.6 L)
Coolant typeethylene glycol-based coolant and Kubota Genuine Coolant
Kubota M125X Coolant Capacity
Coolant capacity
3.6 gal (13.6 L)
Cooling system capacity
3.6 gal (13.6 L)
Radiator capacity
3.6 gal (13.6 L)
Coolant type
ethylene glycol-based coolant and Kubota Genuine Coolant
Engine horsepower
125 hp (93.2 kW)
Engine displacement
5.8 L (354 cu in)
Coolant Capacity Comparison Chart
Coolant capacity comparison
This model
3.6 gal
Average
4 gal
Low
2 gal
High
8 gal
Engine horsepower comparison
This model
125 hp
Average
140 hp
Low
80 hp
High
240 hp
Engine displacement comparison
This model
5.8 L
Average
6 L
Low
3 L
High
10 L
Kubota M125X Coolant and Engine Notes
Coolant capacity note
For service planning, the Kubota M125X should be treated as 3.6 gal (13.6 L) coolant capacity. That is a larger cooling system where you should buy extra coolant before draining it
Radiator capacity note
For the Kubota M125X, the captured radiator capacity is 3.6 gal (13.6 L). If you are doing a full drain, check the full cooling-system capacity too
Coolant type note
For the Kubota M125X, coolant type matters as much as capacity. The clean captured value is ethylene glycol-based coolant and Kubota Genuine Coolant
Engine context note
Engine context for the Kubota M125X: engine horsepower 125 hp (93.2 kW) and displacement 5.8 L (354 cu in). Engine size helps explain why coolant capacity changes between models
Refill note
The practical service move for the Kubota M125X: buy enough coolant for 3.6 gal (13.6 L), fill to spec, run the engine, then recheck the radiator and overflow bottle after cooling
Kubota M125X Coolant Capacity FAQ
What is the cooling system capacity of the Kubota M125X?
The Kubota M125X cooling system capacity is shown as 3.6 gal (13.6 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota M125X?
Use ethylene glycol-based coolant and Kubota Genuine Coolant. The blunt rule is simple: match the manual’s coolant spec and do not mix unknown coolant formulas.
Should I use straight water in the Kubota M125X?
Not for normal long-term use. The Kubota M125X should use the coolant mix specified in the manual or the manual’s specified coolant mix so the system gets corrosion, freeze and boil protection.
Does old coolant matter in the Kubota M125X?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota M125X is the service interval in the operator manual.
Why does the Kubota M125X coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota M125X, the supporting engine data is horsepower 125 hp (93.2 kW) and displacement 5.8 L (354 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.
