For the John Deere 4040, coolant capacity is 6 gal (22.7 L). Fill slowly and recheck the radiator or overflow level after the first heat cycle.
Coolant capacity6 gal (22.7 L)Cooling system refill amount
John Deere 4040 Coolant Capacity Specs
Coolant capacity
6 gal (22.7 L)
Engine horsepower
90 hp
Engine displacement
404 cu in (6.62 L)
John Deere 4040 Coolant Capacity Guide
Coolant capacity guide
This model
6 gal
Class low
1.5 gal
Class typical
3.5 gal
Class high
6 gal
Compared with a broad compact tractor guide, not the full tractor dataset.
John Deere 4040 Coolant Service Notes
Coolant capacity note
For the John Deere 4040, the coolant capacity is 6 gal (22.7 L). That is the buying and refill guide for a full cooling-system service
Coolant service note
The John Deere 4040 should be filled by capacity first, then verified by the actual level marks after the engine cools
Refill check
After a drain and refill on the John Deere 4040, the cooling system can burp air. Recheck the level after the first warm-up and cool-down cycle
Engine context
The engine context for the John Deere 4040 is engine horsepower 90 hp and engine displacement 404 cu in (6.62 L). Use this for comparison only; the refill amount is the coolant capacity above
John Deere 4040 Coolant Capacity FAQ
How many litres of coolant does the John Deere 4040 take?
The cooling system capacity for the John Deere 4040 is 6 gal (22.7 L). This is the main refill figure for a drain, flush or coolant change
How do I avoid air pockets when refilling the John Deere 4040 coolant?
Fill the John Deere 4040 slowly, run it with the heater/thermostat cycle where applicable, let it cool and check the level again. That helps catch trapped air
Should old coolant be drained from the John Deere 4040?
Flush the John Deere 4040 cooling system if the coolant is dirty, contaminated, badly diluted or overdue for service. A simple top-up does not fix old coolant chemistry
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.
