The Kubota F3680 coolant capacity is listed as 2.17 gal (8.2 L). It also lists coolant type ethylene glycol-based coolant and Kubota Genuine Coolant and antifreeze mix 50/50 coolant and water mix.
Kubota F3680 Coolant Capacity
| Cooling system capacity | 2.17 gal (8.2 L) |
|---|---|
| Radiator capacity | 2.17 gal (8.2 L) |
| Coolant type | ethylene glycol-based coolant and Kubota Genuine Coolant |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine model | V1505 |
| Engine horsepower | 36 hp (26.8 kW) |
| Engine displacement | 1.5 L (91.5 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota F3680 Coolant and Engine Notes
| Coolant capacity note | The Kubota F3680 coolant spec points to 2.17 gal (8.2 L). Do not rely on the radiator-only amount if the full cooling-system capacity is available |
|---|---|
| Radiator capacity note | Radiator capacity is listed as 2.17 gal (8.2 L). The full cooling system can be higher because coolant also sits in the engine and hoses |
| Coolant type note | Coolant type for the Kubota F3680 is listed as ethylene glycol-based coolant and Kubota Genuine Coolant. The safest move is to use coolant that matches the manual’s spec rather than mixing random formulas |
| Antifreeze mix note | The 50/50 coolant and water mix mix gives the Kubota F3680 coolant system a sensible balance of freeze protection, boil protection and corrosion protection |
| Engine context note | The Kubota F3680 engine data captured here is engine model V1505, engine horsepower 36 hp (26.8 kW), and displacement 1.5 L (91.5 cu in). Bigger engines usually need more coolant and more careful refill bleeding |
| Refill note | When refilling the Kubota F3680, 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 F3680 Coolant Capacity FAQ
What is the Kubota F3680 coolant capacity?
The Kubota F3680 coolant capacity is listed as 2.17 gal (8.2 L) for cooling system 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 F3680?
No. Use ethylene glycol-based coolant and Kubota Genuine Coolant 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 F3680?
Premixed coolant can be fine if it matches ethylene glycol-based coolant and Kubota Genuine Coolant and the required mix. The captured mix for the Kubota F3680 is 50/50 coolant and water mix.
How often should I change coolant in the Kubota F3680?
The captured coolant change interval for the Kubota F3680 is the service interval in the operator manual. If service history is unknown, changing it is usually smarter than guessing.
What engine specs affect Kubota F3680 coolant capacity?
The captured engine context is engine model V1505, horsepower 36 hp (26.8 kW), and displacement 1.5 L (91.5 cu in). Engine size is one reason coolant capacity changes between tractors.
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.
