The John Deere 4020 takes 6 gal (22.7 L) of coolant. Use coolant compatible with antifreeze coolant and follow the listed 50/50 coolant and water mix guidance.
John Deere 4020 Coolant Capacity Specs
| Coolant capacity | 6 gal (22.7 L) |
|---|---|
| Coolant type | antifreeze coolant |
| Antifreeze mix | 50/50 coolant and water mix |
John Deere 4020 Coolant Capacity Guide
Coolant capacity guide
Compared with a broad compact tractor guide, not the full tractor dataset.
John Deere 4020 Coolant Service Notes
| Coolant capacity note | The John Deere 4020 coolant capacity is 6 gal (22.7 L). Treat it as a cooling-system amount, not a radiator-only top-up amount |
|---|---|
| Coolant service note | The John Deere 4020 cooling system should be refilled close to 6 gal (22.7 L), with coolant choice guided by antifreeze coolant and 50/50 coolant and water mix |
| Coolant type note | Coolant type matters on the John Deere 4020. The listed type is antifreeze coolant, so avoid mixing random antifreeze unless compatibility is clear |
| Antifreeze mix note | For the John Deere 4020, the antifreeze mix is listed as 50/50 coolant and water mix. Use the correct mix rather than topping up repeatedly with plain water |
| Refill check | Use the 6 gal (22.7 L) capacity to buy enough coolant for the John Deere 4020, but finish the job by checking the actual level marks |
John Deere 4020 Coolant Capacity FAQ
How much coolant is needed for a John Deere 4020 coolant change?
The John Deere 4020 takes 6 gal (22.7 L) of coolant. Final level can settle after trapped air leaves the cooling system
Can I use John Deere Cool-Gard in the John Deere 4020?
The John Deere 4020 coolant spec points to antifreeze coolant. That matters because the wrong coolant can reduce corrosion and cavitation protection
What coolant and water mix is used in the John Deere 4020?
If using concentrate for the John Deere 4020, mix it to 50/50 coolant and water mix before filling unless the product label says it is already premixed
Should I bleed air after changing coolant in the John Deere 4020?
After a coolant change on the John Deere 4020, check for leaks, watch temperature and recheck the level once the engine cools down
When should I flush the John Deere 4020 cooling system?
Low level, bad smell, rust, sludge, oil film or overheating are signs to inspect the John Deere 4020 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.
