The John Deere 120 takes 1.5 gal (5.7 L) of coolant. After refilling, run the engine, let it cool and confirm the final level.
John Deere 120 Coolant Capacity Specs
| Coolant capacity | 1.5 gal (5.7 L) |
|---|---|
| Engine model | Kohler 476cc |
| Engine horsepower | 12 hp |
John Deere 120 Coolant Capacity Guide
Coolant capacity guide
Compared with a broad older small tractor guide, not the full tractor dataset.
John Deere 120 Coolant Service Notes
| Coolant capacity note | The useful service number here is 1.5 gal (5.7 L). Keep some extra coolant available because trapped air can lower the level after the first warm-up |
|---|---|
| Coolant service note | After refilling the John Deere 120, run it to operating temperature and recheck after cool-down. Air pockets can make the level drop |
| Refill check | For the John Deere 120, 1.5 gal (5.7 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 120 engine details listed here are engine model Kohler 476cc and engine horsepower 12 hp. The coolant capacity remains the service number to use for refilling |
John Deere 120 Coolant Capacity FAQ
What is the John Deere 120 cooling system capacity?
The listed coolant amount for the John Deere 120 is 1.5 gal (5.7 L). It is a refill guide, not a reason to ignore the actual level marks
Can the John Deere 120 coolant level drop after refilling?
After refilling the John Deere 120, run the engine to operating temperature, let it cool and recheck the radiator or overflow level. Air pockets can make the level drop
Should I flush the John Deere 120 cooling system or just top it up?
A top-up is only a level correction. A flush is the better choice if the John Deere 120 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.
