The Kubota KT305 coolant capacity is listed as 2.17 gal (8.2 L). It also lists antifreeze mix 50/50 coolant and water mix.
Coolant capacity2.17 gal (8.2 L)
Antifreeze mix50/50 coolant and water mix
Change intervalevery 700 hours
Kubota KT305 Coolant Capacity
Coolant capacity
2.17 gal (8.2 L)
Radiator capacity
2.17 gal (8.2 L)
Antifreeze mix
50/50 coolant and water mix
Coolant change interval
every 700 hours
Engine model
D1803
Engine horsepower
30.5 hp (22.7 kW)
Engine displacement
1.6 L (97.6 cu in)
Coolant Capacity Comparison Chart
Coolant capacity comparison
This model
2.17 gal
Average
2 gal
Low
1 gal
High
4 gal
Engine horsepower comparison
This model
30 hp
Average
35 hp
Low
20 hp
High
60 hp
Engine displacement comparison
This model
1.6 L
Average
1.7 L
Low
0.9 L
High
3 L
Kubota KT305 Coolant and Engine Notes
Coolant capacity note
The Kubota KT305’s key coolant figure here is 2.17 gal (8.2 L) for coolant capacity. Use that before buying coolant or draining the system
Radiator capacity note
For the Kubota KT305, 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
Antifreeze mix note
For the Kubota KT305, the captured mix is 50/50 coolant and water mix. Straight water is not the right long-term answer unless you are only flushing the system
Coolant change interval note
Coolant service for the Kubota KT305 is listed as every 700 hours. If the service history is unknown, a fresh drain and refill is usually the cleaner move
Engine context note
Engine context for the Kubota KT305: engine model D1803, engine horsepower 30.5 hp (22.7 kW), and displacement 1.6 L (97.6 cu in). Engine size helps explain why coolant capacity changes between models
Refill note
When refilling the Kubota KT305, use 2.17 gal (8.2 L) as the planning number and 50/50 coolant and water mix as the mixture guide. Recheck the level after the thermostat opens
Kubota KT305 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota KT305?
The Kubota KT305 cooling system capacity is shown as 2.17 gal (8.2 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota KT305?
Use the coolant type specified in the manual. 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 KT305?
Not for normal long-term use. The Kubota KT305 should use 50/50 coolant and 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 KT305?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota KT305 is every 700 hours.
Why does the Kubota KT305 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota KT305, the supporting engine data is engine model D1803, horsepower 30.5 hp (22.7 kW), and displacement 1.6 L (97.6 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.
