The John Deere S120 takes 9.51 gal (36 L) of coolant. Use coolant compatible with John Deere Cool-Gard II and follow the listed 40/60 coolant and water mix guidance.
Coolant capacity9.51 gal (36 L)Cooling system refill amount
Antifreeze mix40/60 coolant and water mixFreeze/boil protection
John Deere S120 Coolant Capacity Specs
Coolant capacity
9.51 gal (36 L)
Coolant type
John Deere Cool-Gard II
Antifreeze mix
40/60 coolant and water mix
Engine horsepower
22 hp
Engine displacement
44.2 cu in (0.72 L)
John Deere S120 Coolant Capacity Guide
Coolant capacity guide
This model
9.51 gal
Class low
0.8 gal
Class typical
2.5 gal
Class high
5 gal
Compared with a broad older small tractor guide, not the full tractor dataset.
John Deere S120 Coolant Service Notes
Coolant capacity note
For the John Deere S120, the coolant capacity is 9.51 gal (36 L). That is the buying and refill guide for a full cooling-system service
Coolant service note
The John Deere S120 cooling system should be refilled close to 9.51 gal (36 L), with coolant choice guided by John Deere Cool-Gard II and 40/60 coolant and water mix
Coolant type note
Coolant type matters on the John Deere S120. The listed type is John Deere Cool-Gard II, so avoid mixing random antifreeze unless compatibility is clear
Antifreeze mix note
For the John Deere S120, the antifreeze mix is listed as 40/60 coolant and water mix. Use the correct mix rather than topping up repeatedly with plain water
Refill check
Use the 9.51 gal (36 L) capacity to buy enough coolant for the John Deere S120, but finish the job by checking the actual level marks
Engine context
The engine context for the John Deere S120 is engine horsepower 22 hp and engine displacement 44.2 cu in (0.72 L). Use this for comparison only; the refill amount is the coolant capacity above
John Deere S120 Coolant Capacity FAQ
How many litres of coolant does the John Deere S120 take?
The John Deere S120 takes 9.51 gal (36 L) of coolant. Final level can settle after trapped air leaves the cooling system
What coolant chemistry should the John Deere S120 use?
The John Deere S120 coolant spec points to John Deere Cool-Gard II. That matters because the wrong coolant can reduce corrosion and cavitation protection
What coolant and water mix is used in the John Deere S120?
The John Deere S120 antifreeze guidance is 40/60 coolant and water mix. Check the coolant label before mixing concentrate and water
How do I avoid air pockets when refilling the John Deere S120 coolant?
After a coolant change on the John Deere S120, check for leaks, watch temperature and recheck the level once the engine cools down
Should old coolant be drained from the John Deere S120?
Low level, bad smell, rust, sludge, oil film or overheating are signs to inspect the John Deere S120 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.
