John Deere 9R 390 Fuel Tank Capacity

Quick answer

The John Deere 9R 390 holds 100 gal (378.5 L) of fuel. The listed fuel type is diesel; half a tank is 50 gal (189.3 L), and an empty-to-full refill needs about 20 x 5-gal cans.

Fuel tank capacity100 gal (378.5 L)Empty-to-full tank amount

Half tank50 gal (189.3 L)Planning guide

5-gal cansabout 20 x 5-gal cans to have enough fuel from emptyPortable fuel estimate

Fuel typedieselUse correct fuel

John Deere 9R 390 fuel tank capacity specs

Fuel tank capacity	100 gal (378.5 L)
Fuel capacity in litres	378.5 L
Half tank amount	50 gal (189.3 L)
5-gallon fuel cans	about 20 x 5-gal cans to have enough fuel from empty
10-litre fuel jugs	38 x 10-L jugs
Fuel type	diesel
Estimated full tank fuel weight	710 lb (322 kg) of diesel
Engine horsepower	390 hp
Engine displacement	829.9 cu in (13.6 L)
Fuel capacity per horsepower	0.256 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 9R 390 fuel planning notes

Fuel capacity note	The John Deere 9R 390 fuel tank is listed at 100 gal (378.5 L). Runtime changes heavily with load, throttle, terrain and implement use.
Refill planning	If carrying fuel to the John Deere 9R 390, budget about 20 x 5-gal cans or 38 x 10-L jugs for a full empty-to-full refill.
Fuel type note	For the John Deere 9R 390, 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 9R 390 adds 710 lb (322 kg) of diesel. This is an estimate for fuel weight only, not total machine weight.
Engine context	For comparison, the John Deere 9R 390 engine details listed here are engine horsepower 390 hp, engine displacement 829.9 cu in (13.6 L), and tank-to-power ratio 0.256 gal per hp. Tank size alone does not predict fuel use per hour.

Fuel tank capacity guide

This model

100 gal

Guide low

150 gal

Guide typical

280 gal

Guide high

420 gal

Compared with a broad 9 Series guide, not the full tractor dataset.

John Deere 9R 390 fuel capacity FAQ

What is the John Deere 9R 390 fuel capacity?

The full fuel tank capacity for the John Deere 9R 390 is 100 gal (378.5 L). Runtime depends on load, throttle and terrain.

What is the John Deere 9R 390 fuel capacity in litres?

The John Deere 9R 390 holds about 378.5 litres of fuel when filled from empty.

How much fuel is half full on the John Deere 9R 390?

The John Deere 9R 390 half-tank amount is 50 gal (189.3 L). If the machine is on a slope, the gauge may read differently.

How many fuel containers does the John Deere 9R 390 need from empty?

To fill the John Deere 9R 390 from empty, budget about 20 x 5-gal cans or 38 x 10-L jugs. If it is only low rather than empty, reduce that amount.

Does the John Deere 9R 390 use diesel fuel?

Use diesel in the John Deere 9R 390 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 9R 390 runtime?

The John Deere 9R 390 may run very different hours on the same 100 gal (378.5 L) tank depending on tillage, pulling, PTO load, hydraulic demand, transport speed and field conditions. Use fuel capacity for planning, not as a fuel-burn rating.