The Kubota L1801 coolant capacity is listed as 1.68 gal (6.3 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 L1801 Coolant Capacity
| Coolant capacity | 1.59 gal (6 L) |
|---|---|
| Cooling system capacity | 1.68 gal (6.3 L) |
| Radiator capacity | 1.68 gal (6.3 L) |
| Coolant type | ethylene glycol-based coolant and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and distilled water mix |
| Engine horsepower | 17.8 hp (13.3 kW) |
| Engine displacement | 0.9 L (54.9 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota L1801 Coolant and Engine Notes
| Coolant capacity note | The headline cooling-system number for the Kubota L1801 is 1.68 gal (6.3 L). Buy enough coolant before opening the drain plug |
|---|---|
| Radiator capacity note | For the Kubota L1801, the captured radiator capacity is 1.68 gal (6.3 L). If you are doing a full drain, check the full cooling-system capacity too |
| Coolant type note | Use the right coolant formula for the Kubota L1801: ethylene glycol-based coolant and ASTM D3306 compatible. Cheap wrong coolant is not a smart saving if it causes corrosion or deposits |
| Antifreeze mix note | For the Kubota L1801, 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 L1801: engine horsepower 17.8 hp (13.3 kW) and displacement 0.9 L (54.9 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | Coolant changes are simple but easy to do sloppily. On the Kubota L1801, plan around 1.68 gal (6.3 L) and confirm the final level after air works out of the system |
Kubota L1801 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota L1801?
The Kubota L1801 cooling system capacity is shown as 1.68 gal (6.3 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota L1801?
Use ethylene glycol-based 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 L1801?
Not for normal long-term use. The Kubota L1801 should use 50/50 coolant and distilled water mix or the manual’s specified coolant mix so the system gets corrosion, freeze and boil protection.
Does old coolant matter in the Kubota L1801?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota L1801 is the service interval in the operator manual.
Why does the Kubota L1801 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota L1801, the supporting engine data is horsepower 17.8 hp (13.3 kW) and displacement 0.9 L (54.9 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.
