The Kubota MZ50 coolant capacity is listed as 2.2 gal (8.3 L). It also lists coolant type ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible and antifreeze mix Kubota recommends a 50: 50 ethylene glycol-based coolant-to-water mix for the MZ50 tractor to protect against freezing and corrosion.
Kubota MZ50 Coolant Capacity
| Coolant capacity | 2.2 gal (8.3 L) |
|---|---|
| Cooling system capacity | 2.17 gal (8.2 L) |
| Radiator capacity | 2.17 gal (8.2 L) |
| Coolant type | ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix | Kubota recommends a 50: 50 ethylene glycol-based coolant-to-water mix for the MZ50 tractor to protect against freezing and corrosion |
| Engine model | V3307-CR-TI-E5 |
| Engine horsepower | 50.7 hp (37.8 kW) |
| Engine displacement | 3.3 L (202 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota MZ50 Coolant and Engine Notes
| Coolant capacity note | The headline cooling-system number for the Kubota MZ50 is 2.2 gal (8.3 L). Buy enough coolant before opening the drain plug |
|---|---|
| Radiator capacity note | The Kubota MZ50 radiator figure is 2.17 gal (8.2 L). Treat it as radiator context, not always the complete refill amount |
| Coolant type note | The captured coolant type for the Kubota MZ50 is ethylene glycol-based coolant, Kubota Genuine 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 MZ50 antifreeze mix is listed as Kubota recommends a 50: 50 ethylene glycol-based coolant-to-water mix for the MZ50 tractor to protect against freezing and corrosion. That is the normal protection range for freezing, boiling and corrosion control |
| Engine context note | For the Kubota MZ50, the supporting engine specs are engine model V3307-CR-TI-E5, engine horsepower 50.7 hp (37.8 kW), and displacement 3.3 L (202 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 MZ50, 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 MZ50 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota MZ50?
The Kubota MZ50 cooling system capacity is shown as 2.2 gal (8.3 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota MZ50?
Use ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible. 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 MZ50?
Not for normal long-term use. The Kubota MZ50 should use Kubota recommends a 50: 50 ethylene glycol-based coolant-to-water mix for the MZ50 tractor to protect against freezing and corrosion or the manual’s specified coolant mix so the system gets corrosion, freeze and boil protection.
Does old coolant matter in the Kubota MZ50?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota MZ50 is the service interval in the operator manual.
Why does the Kubota MZ50 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota MZ50, the supporting engine data is engine model V3307-CR-TI-E5, horsepower 50.7 hp (37.8 kW), and displacement 3.3 L (202 cu in).
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.
