Coolant capacity for the John Deere 6120M is 5.28 gal (20 L). This is the main refill figure for a drain, flush or coolant change.
Coolant capacity5.28 gal (20 L)Cooling system refill amount
John Deere 6120M Coolant Capacity Specs
Coolant capacity
5.28 gal (20 L)
Engine horsepower
120 hp
Engine displacement
274.6 cu in (4.5 L)
John Deere 6120M Coolant Capacity Guide
Coolant capacity guide
This model
5.28 gal
Class low
6 gal
Class typical
9.5 gal
Class high
14 gal
Compared with a broad 6 series guide, not the full tractor dataset.
John Deere 6120M Coolant Service Notes
Coolant capacity note
The John Deere 6120M coolant capacity is 5.28 gal (20 L). Treat it as a cooling-system amount, not a radiator-only top-up amount
Coolant service note
Use 5.28 gal (20 L) as the refill guide for the John Deere 6120M. The final level should still be confirmed at the radiator or overflow bottle
Refill check
Use the 5.28 gal (20 L) capacity to buy enough coolant for the John Deere 6120M, but finish the job by checking the actual level marks
Engine context
The engine context for the John Deere 6120M is engine horsepower 120 hp and engine displacement 274.6 cu in (4.5 L). Use this for comparison only; the refill amount is the coolant capacity above
John Deere 6120M Coolant Capacity FAQ
How much coolant is needed for a John Deere 6120M coolant change?
The John Deere 6120M takes 5.28 gal (20 L) of coolant. Final level can settle after trapped air leaves the cooling system
Should I bleed air after changing coolant in the John Deere 6120M?
After a coolant change on the John Deere 6120M, check for leaks, watch temperature and recheck the level once the engine cools down
When should I flush the John Deere 6120M cooling system?
Low level, bad smell, rust, sludge, oil film or overheating are signs to inspect the John Deere 6120M cooling system rather than only topping it up
Official information note
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.
