The Kubota GT850 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.
ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible
Engine model
D662
Engine horsepower
24.8 hp (18.5 kW)
Engine displacement
0.7 L (40 cu in)
Coolant Capacity Comparison Chart
Coolant capacity comparison
This model
2.2 gal
Average
2 gal
Low
1 gal
High
4 gal
Engine horsepower comparison
This model
25 hp
Average
18 hp
Low
10 hp
High
30 hp
Engine displacement comparison
This model
0.7 L
Average
0.9 L
Low
0.5 L
High
1.5 L
Kubota GT850 Coolant and Engine Notes
Coolant capacity note
For service planning, the Kubota GT850 should be treated as 2.2 gal (8.3 L) coolant capacity. That is a compact tractor cooling system where a normal premixed coolant jug may cover most of the refill
Coolant type note
The captured coolant type for the Kubota GT850 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
Engine context note
The Kubota GT850 engine data captured here is engine model D662, engine horsepower 24.8 hp (18.5 kW), and displacement 0.7 L (40 cu in). Bigger engines usually need more coolant and more careful refill bleeding
Refill note
For a coolant change on the Kubota GT850, 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 GT850 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota GT850?
The Kubota GT850 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 GT850?
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 GT850?
Not for normal long-term use. The Kubota GT850 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 GT850?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota GT850 is the service interval in the operator manual.
Why does the Kubota GT850 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota GT850, the supporting engine data is engine model D662, horsepower 24.8 hp (18.5 kW), and displacement 0.7 L (40 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.
