The John Deere 5820 holds 20.5 gal (77.6 L) of fuel. The listed fuel type is diesel; half a tank is 10.25 gal (38.8 L), and an empty-to-full refill needs about 5 x 5-gal cans.
Fuel tank capacity20.5 gal (77.6 L)Empty-to-full tank amount
Half tank10.25 gal (38.8 L)Planning guide
5-gal cansabout 5 x 5-gal cans to have enough fuel from emptyPortable fuel estimate
Fuel typedieselUse correct fuel
John Deere 5820 fuel tank capacity specs
Fuel tank capacity
20.5 gal (77.6 L)
Fuel capacity in litres
77.6 L
Half tank amount
10.25 gal (38.8 L)
5-gallon fuel cans
about 5 x 5-gal cans to have enough fuel from empty
10-litre fuel jugs
8 x 10-L jugs
Fuel type
diesel
Estimated full tank fuel weight
146 lb (66 kg) of diesel
Fuel capacity is a tank-size figure. Actual top-up amount and runtime depend on remaining fuel, workload, throttle use, terrain and machine condition.
John Deere 5820 fuel planning notes
Fuel capacity note
The John Deere 5820 fuel tank is listed at 20.5 gal (77.6 L). Runtime changes heavily with load, throttle, terrain and implement use.
Refill planning
If carrying fuel to the John Deere 5820, budget about 5 x 5-gal cans or 8 x 10-L jugs for a full empty-to-full refill.
Fuel type note
For the John Deere 5820, fuel choice is listed as diesel. Capacity tells you how much; fuel type tells you what to put in it.
Full tank weight
A full tank on the John Deere 5820 adds 146 lb (66 kg) of diesel. This is an estimate for fuel weight only, not total machine weight.
Fuel tank capacity guide
This model
20.5 gal
Guide low
18 gal
Guide typical
28 gal
Guide high
50 gal
Compared with a broad Utility tractor guide, not the full tractor dataset.
John Deere 5820 fuel capacity FAQ
What is the John Deere 5820 fuel capacity?
For refueling, the John Deere 5820 is listed at 20.5 gal (77.6 L). This is tank size, not a guaranteed runtime figure.
What is the John Deere 5820 fuel capacity in litres?
The John Deere 5820 holds about 77.6 litres of fuel when filled from empty.
How much fuel is half full on the John Deere 5820?
The John Deere 5820 half-tank amount is 10.25 gal (38.8 L). If the machine is on a slope, the gauge may read differently.
How many fuel containers does the John Deere 5820 need from empty?
To fill the John Deere 5820 from empty, budget about 5 x 5-gal cans or 8 x 10-L jugs. If it is only low rather than empty, reduce that amount.
Does the John Deere 5820 use diesel fuel?
Use diesel in the John Deere 5820 where that listing applies. Wrong fuel can create a much bigger problem than a low tank.
Does fuel tank capacity tell me the John Deere 5820 runtime?
The John Deere 5820 may run very different hours on the same 20.5 gal (77.6 L) tank depending on loader work, PTO implements, mowing, pulling, road travel and terrain. Use fuel capacity for planning, not as a fuel-burn rating.
How does the John Deere 5820 tank size compare?
For the John Deere 5820, plan fuel before field work because a full empty-to-full refill is more than a quick splash from one small can.
Official information note
Mistakes do happen. Check the operator manual, service manual and official deere.com website for official fuel capacity specifications.
