The John Deere 8320R takes 10.58 gal (40.1 L) of coolant. After refilling, run the engine, let it cool and confirm the final level.
John Deere 8320R Coolant Capacity Specs
| Coolant capacity | 10.58 gal (40.1 L) |
|---|---|
| Engine horsepower | 320 hp |
| Engine displacement | 9 L (549.2 cu in) |
John Deere 8320R Coolant Capacity Guide
Coolant capacity guide
Compared with a broad 8 series guide, not the full tractor dataset.
John Deere 8320R Coolant Service Notes
| Coolant capacity note | The useful service number here is 10.58 gal (40.1 L). Keep some extra coolant available because trapped air can lower the level after the first warm-up |
|---|---|
| Coolant service note | After refilling the John Deere 8320R, run it to operating temperature and recheck after cool-down. Air pockets can make the level drop |
| Refill check | For the John Deere 8320R, 10.58 gal (40.1 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 8320R is engine horsepower 320 hp and engine displacement 9 L (549.2 cu in). Use this for comparison only; the refill amount is the coolant capacity above |
John Deere 8320R Coolant Capacity FAQ
What is the John Deere 8320R cooling system capacity?
For coolant service, the John Deere 8320R is listed at 10.58 gal (40.1 L). Buy enough coolant for that amount and confirm the final level at the machine
Can the John Deere 8320R coolant level drop after refilling?
Do not judge the job only by pouring in 10.58 gal (40.1 L). The final check is the actual radiator or overflow level after the system has burped air
Should I flush the John Deere 8320R cooling system or just top it up?
Topping up is fine for a small low-level correction. If the coolant is old, rusty, oily, diluted or the wrong type, drain and flush the system using the 10.58 gal (40.1 L) capacity as the refill guide
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.

