The John Deere X729 takes 9.5 gal (36 L) of coolant. Use coolant compatible with John Deere Cool-Gard II and follow the listed 40/60 coolant and water mix guidance.
Coolant capacity9.5 gal (36 L)Cooling system refill amount
Antifreeze mix40/60 coolant and water mixFreeze/boil protection
John Deere X729 Coolant Capacity Specs
Coolant capacity
9.5 gal (36 L)
Coolant type
John Deere Cool-Gard II
Antifreeze mix
40/60 coolant and water mix
Engine horsepower
27 hp
Engine displacement
45.5 cu in (0.75 L)
John Deere X729 Coolant Capacity Guide
Coolant capacity guide
This model
9.51 gal
Class low
0.5 gal
Class typical
2.5 gal
Class high
4.5 gal
Compared with a broad ztrak / mower guide, not the full tractor dataset.
John Deere X729 Coolant Service Notes
Coolant capacity note
For the John Deere X729, the coolant capacity is 9.5 gal (36 L). That is the buying and refill guide for a full cooling-system service
Coolant service note
The John Deere X729 cooling system should be refilled close to 9.5 gal (36 L), with coolant choice guided by John Deere Cool-Gard II and 40/60 coolant and water mix
Coolant type note
Coolant type matters on the John Deere X729. The listed type is John Deere Cool-Gard II, so avoid mixing random antifreeze unless compatibility is clear
Antifreeze mix note
For the John Deere X729, the antifreeze mix is listed as 40/60 coolant and water mix. Use the correct mix rather than topping up repeatedly with plain water
Refill check
Use the 9.5 gal (36 L) capacity to buy enough coolant for the John Deere X729, but finish the job by checking the actual level marks
Engine context
The John Deere X729 engine specs listed with this page are engine horsepower 27 hp and engine displacement 45.5 cu in (0.75 L). They help identify the machine, but they are not a substitute for the coolant capacity
John Deere X729 Coolant Capacity FAQ
How many litres of coolant does the John Deere X729 take?
Use 9.5 gal (36 L) as the coolant-change amount for the John Deere X729. The final level should still be checked at the radiator or overflow bottle
What coolant chemistry should the John Deere X729 use?
Use coolant compatible with John Deere Cool-Gard II for the John Deere X729. Capacity tells you how much; coolant type tells you what to use
What antifreeze ratio is listed for the John Deere X729?
For the John Deere X729, the coolant mix is listed as 40/60 coolant and water mix. Do not dilute the system with too much plain water
How do I avoid air pockets when refilling the John Deere X729 coolant?
The 9.5 gal (36 L) number helps you plan the refill. The actual finish point is the correct level mark after warm-up, cool-down and leak checking
Should old coolant be drained from the John Deere X729?
For the John Deere X729, use the 9.5 gal (36 L) capacity when planning a full drain or flush. Topping up only solves low level, not worn-out coolant
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.
