Fuel tank capacity for the John Deere 8400R is 174.89 gal (662 L). That equals 87.44 gal (331 L) at half tank, with diesel listed as the fuel type.
Fuel tank capacity174.89 gal (662 L)Empty-to-full tank amount
Half tank87.44 gal (331 L)Planning guide
5-gal cansabout 35 x 5-gal cans to have enough fuel from emptyPortable fuel estimate
Fuel typedieselUse correct fuel
John Deere 8400R fuel tank capacity specs
Fuel tank capacity
174.89 gal (662 L)
Fuel capacity in litres
662 L
Half tank amount
87.44 gal (331 L)
5-gallon fuel cans
about 35 x 5-gal cans to have enough fuel from empty
10-litre fuel jugs
67 x 10-L jugs
Fuel type
diesel
Estimated full tank fuel weight
1,242 lb (563 kg) of diesel
Engine model
9.0 L PowerTech
Engine horsepower
400 hp
Engine displacement
548 cu in (9 L)
Fuel capacity per horsepower
0.437 gal per hp
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 8400R fuel planning notes
Fuel capacity note
For the John Deere 8400R, fuel tank capacity is 174.89 gal (662 L). This helps with fill-up planning, fuel storage and estimating how much fuel to bring to a job.
Refill planning
For an empty-to-full refill on the John Deere 8400R, plan for about 35 x 5-gal cans or 67 x 10-L jugs. Real fill amount can be slightly lower if fuel remains in the tank.
Fuel type note
Fuel type matters on the John Deere 8400R. The listed type is diesel, so use the correct fuel before judging performance or runtime.
Full tank weight
For transport and storage planning, the John Deere 8400R full tank fuel load is roughly 1,242 lb (563 kg) of diesel. Actual weight varies slightly by fuel blend and temperature.
Engine context
The John Deere 8400R engine specs listed with this page are engine model 9.0 L PowerTech, engine horsepower 400 hp, engine displacement 548 cu in (9 L), and tank-to-power ratio 0.437 gal per hp. They help compare models but are not a fuel-consumption rating.
Fuel tank capacity guide
This model
174.89 gal
Guide low
100 gal
Guide typical
155 gal
Guide high
230 gal
Compared with a broad 8 Series guide, not the full tractor dataset.
John Deere 8400R fuel capacity FAQ
How much fuel does the John Deere 8400R hold?
The listed fuel capacity for the John Deere 8400R is 174.89 gal (662 L). Treat it as the full tank size when planning fuel.
How many litres is the John Deere 8400R fuel tank?
The John Deere 8400R fuel tank is 174.89 gal (662 L), which converts to about 662 litres.
What is the half-tank amount for the John Deere 8400R?
Half-full fuel on the John Deere 8400R is about 87.44 gal (331 L). Use the tank gauge as a guide, not a lab instrument.
How many fuel cans are needed to fill the John Deere 8400R?
Portable refueling for the John Deere 8400R is roughly about 35 x 5-gal cans or 67 x 10-L jugs. Bring extra only if you expect long runtime or heavy use.
Does the John Deere 8400R use gasoline?
The John Deere 8400R fuel listing shows diesel. Use the correct fuel type and avoid mixing fuels.
How far can the John Deere 8400R go on a tank?
The John Deere 8400R tank size is 174.89 gal (662 L), but runtime changes with workload. Fuel use is higher with tillage, heavy pulling, high hydraulic demand, PTO work or hard transport use than with light transport, low-load PTO work or easier field conditions.
Is the John Deere 8400R fuel tank small or large?
The John Deere 8400R has a large fuel tank at 174.89 gal (662 L). This is bulk-fuel territory, not something most people want to fill with small cans.
Official information note
Mistakes do happen. Check the operator manual, service manual and official deere.com website for official fuel capacity specifications.
