Antifreeze mix60/40 coolant and water mixFreeze/boil protection
John Deere 5120M Coolant Capacity Specs
Coolant capacity
9.51 gal (36 L)
Coolant type
John Deere Cool-Gard II
Antifreeze mix
60/40 coolant and water mix
Engine horsepower
120 hp
Engine displacement
4.5 L (274.6 cu in)
John Deere 5120M Coolant Capacity Guide
Coolant capacity guide
This model
9.51 gal
Class low
4 gal
Class typical
6.5 gal
Class high
10 gal
Compared with a broad utility tractor guide, not the full tractor dataset.
John Deere 5120M Coolant Service Notes
Coolant capacity note
The useful service number here is 9.51 gal (36 L). Keep some extra coolant available because trapped air can lower the level after the first warm-up
Coolant service note
Use 9.51 gal (36 L) as the refill amount for the John Deere 5120M, but do not mix coolant types blindly. The listed coolant detail is John Deere Cool-Gard II and 60/40 coolant and water mix
Coolant type note
The listed coolant type for the John Deere 5120M is John Deere Cool-Gard II. Match the coolant chemistry before topping up or flushing the system
Antifreeze mix note
The listed antifreeze mix for the John Deere 5120M is 60/40 coolant and water mix. Mix ratio affects freeze protection, boil protection and corrosion control
Refill check
When refilling the John Deere 5120M, do not pour in 9.51 gal (36 L) and walk away. Fill slowly, run the engine, let it cool and recheck the level
Engine context
The John Deere 5120M engine specs listed with this page are engine horsepower 120 hp and engine displacement 4.5 L (274.6 cu in). They help identify the machine, but they are not a substitute for the coolant capacity
John Deere 5120M Coolant Capacity FAQ
What is the John Deere 5120M cooling system capacity?
The John Deere 5120M coolant capacity is 9.51 gal (36 L). Use this as the cooling-system refill amount and recheck the level after warm-up and cool-down
What coolant is recommended for the John Deere 5120M?
Use John Deere Cool-Gard II or a coolant that clearly meets the same requirement for the John Deere 5120M. Do not rely on color alone because coolant color is not a perfect chemistry guide
Does the John Deere 5120M need a 50/50 coolant mix?
The listed antifreeze mix for the John Deere 5120M is 60/40 coolant and water mix. Use the correct mix for freeze, boil and corrosion protection
Can the John Deere 5120M coolant level drop after refilling?
The John Deere 5120M may need a small top-up after the first heat cycle. Fill slowly, watch for leaks and recheck the level when cool
Should I flush the John Deere 5120M cooling system or just top it up?
Use a full coolant service on the John Deere 5120M when the system needs fresh coolant, not just more coolant. Plan the refill around the 9.51 gal (36 L) capacity
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.
