The John Deere 6520 Premium takes 5.15 gal (19.5 L) of coolant. After refilling, run the engine, let it cool and confirm the final level.
John Deere 6520 Premium Coolant Capacity Specs
| Coolant capacity | 5.15 gal (19.5 L) |
|---|---|
| Engine horsepower | 110 hp |
| Engine displacement | 414.1 cu in (6.79 L) |
John Deere 6520 Premium Coolant Capacity Guide
Coolant capacity guide
Compared with a broad 6 series guide, not the full tractor dataset.
John Deere 6520 Premium Coolant Service Notes
| Coolant capacity note | The useful service number here is 5.15 gal (19.5 L). Keep some extra coolant available because trapped air can lower the level after the first warm-up |
|---|---|
| Coolant service note | The John Deere 6520 Premium 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 6520 Premium, 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 6520 Premium engine details listed here are engine horsepower 110 hp and engine displacement 414.1 cu in (6.79 L). The coolant capacity remains the service number to use for refilling |
John Deere 6520 Premium Coolant Capacity FAQ
How much coolant should I buy for the John Deere 6520 Premium?
Plan around 5.15 gal (19.5 L) when servicing coolant on the John Deere 6520 Premium. Recheck the system when cool because air pockets can lower the level
Do I fill the John Deere 6520 Premium exactly to capacity or check the level marks?
Yes. Use the 5.15 gal (19.5 L) figure as the refill guide, but always recheck level after warm-up and cool-down because trapped air can move through the system
Can I just add coolant to the John Deere 6520 Premium if the level is low?
If the John Deere 6520 Premium coolant is only slightly low and otherwise clean, topping up with compatible coolant can be enough. If condition is poor, drain and refill instead
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.

