For the John Deere 4840, coolant capacity is 10 gal (37.9 L). Coolant choice is listed as John Deere Cool-Gard II, with 60/40 coolant and water mix guidance.
Coolant capacity10 gal (37.9 L)Cooling system refill amount
Antifreeze mix60/40 coolant and water mixFreeze/boil protection
John Deere 4840 Coolant Capacity Specs
Coolant capacity
10 gal (37.9 L)
Coolant type
John Deere Cool-Gard II
Antifreeze mix
60/40 coolant and water mix
Engine horsepower
180 hp
Engine displacement
466 cu in (7.64 L)
John Deere 4840 Coolant Capacity Guide
Coolant capacity guide
This model
10 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 4840 Coolant Service Notes
Coolant capacity note
The John Deere 4840 coolant capacity is 10 gal (37.9 L). Treat it as a cooling-system amount, not a radiator-only top-up amount
Coolant service note
For a full coolant service on the John Deere 4840, plan around 10 gal (37.9 L) and match the listed coolant guidance: John Deere Cool-Gard II and 60/40 coolant and water mix
Coolant type note
The John Deere 4840 coolant type is John Deere Cool-Gard II. Wrong coolant chemistry can reduce corrosion, freeze and boil protection
Antifreeze mix note
The listed mix for the John Deere 4840 is 60/40 coolant and water mix. Keep the coolant strength in range after a drain, flush or top-up
Refill check
After a drain and refill on the John Deere 4840, the cooling system can burp air. Recheck the level after the first warm-up and cool-down cycle
Engine context
The John Deere 4840 engine specs listed with this page are engine horsepower 180 hp and engine displacement 466 cu in (7.64 L). They help identify the machine, but they are not a substitute for the coolant capacity
John Deere 4840 Coolant Capacity FAQ
How much coolant is needed for a John Deere 4840 coolant change?
The cooling system capacity for the John Deere 4840 is 10 gal (37.9 L). This is the main refill figure for a drain, flush or coolant change
Can I use John Deere Cool-Gard in the John Deere 4840?
For the John Deere 4840, the coolant type is listed as John Deere Cool-Gard II. Avoid mixing incompatible coolant products
What mix ratio should I use when refilling the John Deere 4840?
For the John Deere 4840, the coolant mix is listed as 60/40 coolant and water mix. Do not dilute the system with too much plain water
Should I bleed air after changing coolant in the John Deere 4840?
Fill the John Deere 4840 slowly, run it with the heater/thermostat cycle where applicable, let it cool and check the level again. That helps catch trapped air
When should I flush the John Deere 4840 cooling system?
Flush the John Deere 4840 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.
