Kubota GL201 – GL301 – GL467 engine oil & fluids
Kubota GL series engine oil and fluids (GL201 through GL467)
Suitable for the entire Kubota GL series: GL201, GL221, GL241, GL261, GL277, GL281, GL301, GL321, GL337, GL367, GL417 and GL467 (also known as the Hinomoto NX series). The oil types are the same across the whole series; the quantities differ per model. Below you'll find the capacities per model group, taken directly from the Kubota manual.
Capacities per model
| Fluid | GL201–GL241 | GL261–GL337 | GL367–GL467 | Type |
|---|---|---|---|---|
| Engine oil | 5.7 L | 5.7 L | 8.2 L | Diesel engine oil CC/CD, SAE 30 or 10W-30 |
| Transmission/hydraulic oil | 29–36 L | 35–37 L | 41 L | Super UDT (UTTO / GL-4) |
| Front axle (4WD) | 3.2 L | 3.5 L | 3.9 L | Super UDT |
| Coolant | 6.0 L | 7.0 L | 6.9 L | Antifreeze (LLC) 50% |
| Fuel (diesel) | 27 L | 27–35 L | 35 L | Diesel / gas oil |
| Steering gear oil (manual steering) | 0.2 L | 0.2 L | n/a (power steering) | Super UDT |
Always fill engine oil up to the upper mark on the dipstick and check the level with the tractor level. The exact amount depends on your specific model and configuration – consult your manual if in doubt.
Engine oil: which one to choose?
Kubota specifies a diesel engine oil of CC or CD class for the GL series, with a viscosity of SAE 30 or 10W-30. In practice, most owners today use a modern multigrade 15W-40 (API SG/CD) as a common alternative – it flows quickly during cold starts and holds up well during hot, heavy-duty work, all year round. The three-cylinder models (GL201 through GL337) need about 5.7 liters ; the larger four-cylinder models (GL367 through GL467) need about 8.2 liters.
Transmission and hydraulic oil
The GL series shares one oil bath for the transmission and hydraulics. The capacity increases with the model: from about 29–36 liters for the smaller models to 41 liters for the GL367–GL467. Kubota specifies Super UDT for this, a special UTTO oil that simultaneously lubricates the gearbox, hydraulics, and wet brakes. Do not use regular engine oil for this: the wet brakes and hydraulics specifically require these UTTO properties. An equivalent GL-4 UTTO oil is a good alternative.
The front axle has its own, smaller oil bath – 3.2 liters for the smallest models, increasing to 3.9 liters for the largest – also using UTTO oil. Don't forget this during a major service; a dry-run front axle is an expensive repair.
Coolant
The cooling system holds 6 to 7 liters, depending on the model. Always use a mixture of antifreeze (long-life coolant) with water, approximately 50/50. An incorrect mixing ratio causes freeze damage in winter and overheating in summer. Replace the coolant every two years; old coolant loses its corrosion-preventing properties.
You can find the exact capacities per model in our technical specifications of the GL series, and when to change what in the maintenance schedule.
