The Kubota STV40 coolant capacity is listed as 2.17 gal (8.2 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
V2403-CR-TI-E4-BG
Engine displacement
1.8 L (111.4 cu in)
Coolant Capacity Comparison Chart
Coolant capacity comparison
This model
2.17 gal
Average
2 gal
Low
1 gal
High
4 gal
Engine displacement comparison
This model
1.8 L
Average
1.7 L
Low
0.9 L
High
3 L
Kubota STV40 Coolant and Engine Notes
Coolant capacity note
The headline cooling-system number for the Kubota STV40 is 2.17 gal (8.2 L). Buy enough coolant before opening the drain plug
Radiator capacity note
For the Kubota STV40, the captured radiator capacity is 2.17 gal (8.2 L). If you are doing a full drain, check the full cooling-system capacity too
Coolant type note
For the Kubota STV40, 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 STV40: engine model V2403-CR-TI-E4-BG and displacement 1.8 L (111.4 cu in). Engine size helps explain why coolant capacity changes between models
Refill note
The practical service move for the Kubota STV40: buy enough coolant for 2.17 gal (8.2 L), fill to spec, run the engine, then recheck the radiator and overflow bottle after cooling
Kubota STV40 Coolant Capacity FAQ
What is the Kubota STV40 coolant capacity?
The Kubota STV40 coolant capacity is listed as 2.17 gal (8.2 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 STV40?
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 STV40?
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 STV40 is the coolant mix specified in the manual.
How often should I change coolant in the Kubota STV40?
The captured coolant change interval for the Kubota STV40 is the service interval in the operator manual. If service history is unknown, changing it is usually smarter than guessing.
Why does the Kubota STV40 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota STV40, the supporting engine data is engine model V2403-CR-TI-E4-BG and displacement 1.8 L (111.4 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.
