The John Deere 40R takes 4.75 gal (18 L) of coolant. After refilling, run the engine, let it cool and confirm the final level.
John Deere 40R Coolant Capacity Specs
| Coolant capacity | 4.75 gal (18 L) |
|---|---|
| Engine horsepower | 33 hp |
| Engine displacement | 94.7 cu in (1.55 L) |
John Deere 40R Coolant Capacity Guide
Coolant capacity guide
Compared with a broad older small tractor guide, not the full tractor dataset.
John Deere 40R Coolant Service Notes
| Coolant capacity note | The useful service number here is 4.75 gal (18 L). Keep some extra coolant available because trapped air can lower the level after the first warm-up |
|---|---|
| Coolant service note | Use 4.75 gal (18 L) as the refill guide for the John Deere 40R. The final level should still be confirmed at the radiator or overflow bottle |
| Refill check | Use the 4.75 gal (18 L) capacity to buy enough coolant for the John Deere 40R, but finish the job by checking the actual level marks |
| Engine context | The engine context for the John Deere 40R is engine horsepower 33 hp and engine displacement 94.7 cu in (1.55 L). Use this for comparison only; the refill amount is the coolant capacity above |
John Deere 40R Coolant Capacity FAQ
How much coolant should I buy for the John Deere 40R?
The John Deere 40R takes 4.75 gal (18 L) of coolant. Final level can settle after trapped air leaves the cooling system
Do I fill the John Deere 40R exactly to capacity or check the level marks?
After a coolant change on the John Deere 40R, check for leaks, watch temperature and recheck the level once the engine cools down
Can I just add coolant to the John Deere 40R if the level is low?
Low level, bad smell, rust, sludge, oil film or overheating are signs to inspect the John Deere 40R cooling system rather than only topping it up
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.
