For the John Deere D125, coolant capacity is 14 gal (53 L). Fill slowly and recheck the radiator or overflow level after the first heat cycle.
Coolant capacity14 gal (53 L)Cooling system refill amount
John Deere D125 Coolant Capacity Specs
Coolant capacity
14 gal (53 L)
Engine horsepower
20 hp
Engine displacement
40 cu in (0.66 L)
John Deere D125 Coolant Capacity Guide
Coolant capacity guide
This model
14 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 D125 Coolant Service Notes
Coolant capacity note
For the John Deere D125, the coolant capacity is 14 gal (53 L). That is the buying and refill guide for a full cooling-system service
Coolant service note
The John Deere D125 should be filled by capacity first, then verified by the actual level marks after the engine cools
Refill check
After a drain and refill on the John Deere D125, the cooling system can burp air. Recheck the level after the first warm-up and cool-down cycle
Engine context
The John Deere D125 engine specs listed with this page are engine horsepower 20 hp and engine displacement 40 cu in (0.66 L). They help identify the machine, but they are not a substitute for the coolant capacity
John Deere D125 Coolant Capacity FAQ
How many litres of coolant does the John Deere D125 take?
Plan around 14 gal (53 L) when servicing coolant on the John Deere D125. Recheck the system when cool because air pockets can lower the level
How do I avoid air pockets when refilling the John Deere D125 coolant?
Yes. Use the 14 gal (53 L) figure as the refill guide, but always recheck level after warm-up and cool-down because trapped air can move through the system
Should old coolant be drained from the John Deere D125?
If the John Deere D125 coolant is only slightly low and otherwise clean, topping up with compatible coolant can be enough. If condition is poor, drain and refill instead
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.
