The John Deere X739 coolant capacity is 1.59 gal (6 L). Use this as the cooling-system refill amount and recheck the level after the engine cools.
Coolant capacity1.59 gal (6 L)Cooling system refill amount
John Deere X739 Coolant Capacity Specs
Coolant capacity
1.59 gal (6 L)
Engine model
John Deere X739 features a 25.5-hp
Engine horsepower
25.5 hp
Engine displacement
45.5 cu in (0.75 L)
John Deere X739 Coolant Capacity Guide
Coolant capacity guide
This model
1.59 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 X739 Coolant Service Notes
Coolant capacity note
The John Deere X739 cooling system is listed at 1.59 gal (6 L). Final level can settle after the first heat cycle, so recheck the level after service
Coolant service note
After refilling the John Deere X739, run it to operating temperature and recheck after cool-down. Air pockets can make the level drop
Refill check
For the John Deere X739, 1.59 gal (6 L) is the planned refill amount. The final level may need a small top-up after trapped air leaves the system
Engine context
The engine context for the John Deere X739 is engine model John Deere X739 features a 25.5-hp, engine horsepower 25.5 hp, and engine displacement 45.5 cu in (0.75 L). Use this for comparison only; the refill amount is the coolant capacity above
John Deere X739 Coolant Capacity FAQ
What is the refill amount for the John Deere X739 cooling system?
The listed coolant amount for the John Deere X739 is 1.59 gal (6 L). It is a refill guide, not a reason to ignore the actual level marks
Should I run the John Deere X739 after adding coolant?
After refilling the John Deere X739, run the engine to operating temperature, let it cool and recheck the radiator or overflow level. Air pockets can make the level drop
When is a full coolant flush better than a top-up on the John Deere X739?
A top-up is only a level correction. A flush is the better choice if the John Deere X739 has rusty coolant, oil contamination, mixed coolant types or repeated overheating
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.
