The Kubota SMZ85 coolant capacity is listed as 2.3 gal (8.7 L). It also lists coolant type ethylene glycol-based coolant and antifreeze mix 50/50 coolant and water mix.
Coolant capacity2.3 gal (8.7 L)
Coolant typeethylene glycol-based coolant
Antifreeze mix50/50 coolant and water mix
Kubota SMZ85 Coolant Capacity
Coolant capacity
2.3 gal (8.7 L)
Cooling system capacity
2.17 gal (8.2 L)
Radiator capacity
2.17 gal (8.2 L)
Coolant type
ethylene glycol-based coolant
Antifreeze mix
50/50 coolant and water mix
Engine model
D1105
Engine horsepower
85 hp (63.4 kW)
Engine displacement
1.1 L (68.5 cu in)
Coolant Capacity Comparison Chart
Coolant capacity comparison
This model
2.3 gal
Average
2 gal
Low
1 gal
High
4 gal
Engine horsepower comparison
This model
85 hp
Average
75 hp
Low
40 hp
High
125 hp
Engine displacement comparison
This model
1.1 L
Average
0.9 L
Low
0.5 L
High
1.5 L
Kubota SMZ85 Coolant and Engine Notes
Coolant capacity note
The Kubota SMZ85 coolant spec points to 2.3 gal (8.7 L). Do not rely on the radiator-only amount if the full cooling-system capacity is available
Radiator capacity note
For the Kubota SMZ85, 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
Coolant type for the Kubota SMZ85 is listed as ethylene glycol-based coolant. The safest move is to use coolant that matches the manual’s spec rather than mixing random formulas
Antifreeze mix note
For the Kubota SMZ85, 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
Engine context note
Engine context for the Kubota SMZ85: engine model D1105, engine horsepower 85 hp (63.4 kW), and displacement 1.1 L (68.5 cu in). Engine size helps explain why coolant capacity changes between models
Refill note
When refilling the Kubota SMZ85, use 2.3 gal (8.7 L) as the planning number and 50/50 coolant and water mix as the mixture guide. Recheck the level after the thermostat opens
Kubota SMZ85 Coolant Capacity FAQ
What is the cooling system capacity of the Kubota SMZ85?
The Kubota SMZ85 cooling system capacity is shown as 2.3 gal (8.7 L). That is the number to use before draining the system.
What coolant type should I use in the Kubota SMZ85?
Use ethylene glycol-based coolant. 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 SMZ85?
Not for normal long-term use. The Kubota SMZ85 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 SMZ85?
Yes. Old coolant can lose protection even if temperature looks normal. The listed service interval for the Kubota SMZ85 is the service interval in the operator manual.
What engine specs affect Kubota SMZ85 coolant capacity?
The captured engine context is engine model D1105, horsepower 85 hp (63.4 kW), and displacement 1.1 L (68.5 cu in). Engine size is one reason coolant capacity changes between tractors.
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.
