For the John Deere 40, coolant capacity is 6 gal (22.7 L). Fill slowly and recheck the radiator or overflow level after the first heat cycle.
John Deere 40 Coolant Capacity Specs
| Coolant capacity | 6 gal (22.7 L) |
|---|---|
| Engine horsepower | 23 hp |
| Engine displacement | 100.5 cu in (1.65 L) |
John Deere 40 Coolant Capacity Guide
Coolant capacity guide
Compared with a broad older small tractor guide, not the full tractor dataset.
John Deere 40 Coolant Service Notes
| Coolant capacity note | For the John Deere 40, 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 40 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 40, the cooling system can burp air. Recheck the level after the first warm-up and cool-down cycle |
| Engine context | The John Deere 40 engine specs listed with this page are engine horsepower 23 hp and engine displacement 100.5 cu in (1.65 L). They help identify the machine, but they are not a substitute for the coolant capacity |
John Deere 40 Coolant Capacity FAQ
How many litres of coolant does the John Deere 40 take?
Plan around 6 gal (22.7 L) when servicing coolant on the John Deere 40. Recheck the system when cool because air pockets can lower the level
How do I avoid air pockets when refilling the John Deere 40 coolant?
Yes. Use the 6 gal (22.7 L) figure as the refill guide, but always recheck level after warm-up and cool-down because trapped air can move through the system
Should old coolant be drained from the John Deere 40?
If the John Deere 40 coolant is only slightly low and otherwise clean, topping up with compatible coolant can be enough. If condition is poor, drain and refill instead
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.
