The John Deere H takes 5.5 gal (20.8 L) of coolant. After refilling, run the engine, let it cool and confirm the final level.
Coolant capacity5.5 gal (20.8 L)Cooling system refill amount
John Deere H Coolant Capacity Specs
Coolant capacity
5.5 gal (20.8 L)
Engine model
John Deere H tractor features a two-cylinder engine
Engine horsepower
15 hp
Engine displacement
99.7 cu in (1.63 L)
John Deere H Coolant Capacity Guide
Coolant capacity guide
This model
5.5 gal
Class low
1 gal
Class typical
6 gal
Class high
18 gal
Compared with a broad tractor guide, not the full tractor dataset.
John Deere H Coolant Service Notes
Coolant capacity note
The useful service number here is 5.5 gal (20.8 L). Keep some extra coolant available because trapped air can lower the level after the first warm-up
Coolant service note
The John Deere H 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 H, the cooling system can burp air. Recheck the level after the first warm-up and cool-down cycle
Engine context
For comparison, the John Deere H engine details listed here are engine model John Deere H tractor features a two-cylinder engine, engine horsepower 15 hp, and engine displacement 99.7 cu in (1.63 L). The coolant capacity remains the service number to use for refilling
John Deere H Coolant Capacity FAQ
How much coolant should I buy for the John Deere H?
The cooling system capacity for the John Deere H is 5.5 gal (20.8 L). This is the main refill figure for a drain, flush or coolant change
Do I fill the John Deere H exactly to capacity or check the level marks?
Fill the John Deere H slowly, run it with the heater/thermostat cycle where applicable, let it cool and check the level again. That helps catch trapped air
Can I just add coolant to the John Deere H if the level is low?
Flush the John Deere H 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.
