For the John Deere GX345, coolant capacity is 0.82 gal (3.1 L). Fill slowly and recheck the radiator or overflow level after the first heat cycle.
John Deere GX345 Coolant Capacity Specs
| Coolant capacity | 0.82 gal (3.1 L) |
|---|---|
| Engine horsepower | 20 hp |
| Engine displacement | 36.8 cu in (0.6 L) |
John Deere GX345 Coolant Capacity Guide
Coolant capacity guide
Compared with a broad older small tractor guide, not the full tractor dataset.
John Deere GX345 Coolant Service Notes
| Coolant capacity note | For the John Deere GX345, the coolant capacity is 0.82 gal (3.1 L). That is the buying and refill guide for a full cooling-system service |
|---|---|
| Coolant service note | After refilling the John Deere GX345, run it to operating temperature and recheck after cool-down. Air pockets can make the level drop |
| Refill check | For the John Deere GX345, 0.82 gal (3.1 L) is the planned refill amount. The final level may need a small top-up after trapped air leaves the system |
| Engine context | For comparison, the John Deere GX345 engine details listed here are engine horsepower 20 hp and engine displacement 36.8 cu in (0.6 L). The coolant capacity remains the service number to use for refilling |
John Deere GX345 Coolant Capacity FAQ
What is the John Deere GX345 coolant capacity?
The listed coolant amount for the John Deere GX345 is 0.82 gal (3.1 L). It is a refill guide, not a reason to ignore the actual level marks
What should I check after refilling coolant in the John Deere GX345?
After refilling the John Deere GX345, run the engine to operating temperature, let it cool and recheck the radiator or overflow level. Air pockets can make the level drop
Is a coolant top-up enough before using the John Deere GX345?
A top-up is only a level correction. A flush is the better choice if the John Deere GX345 has rusty coolant, oil contamination, mixed coolant types or repeated overheating
Mistakes do happen. Tractor coolant capacity and coolant type can change by year, market, engine, radiator setup and service procedure. Check the operator manual, service manual and official deere.com website before draining, flushing or refilling the cooling system.







