Owner's manual.
ECMB fuse
38 gallons
2004 dodge ram 3500 crew cab dually 1/2 tank of fuel 8000 lb,
I am getting close to 10 - 11 miles to the gallon in a 1989 ford dually with a 460 fuel injected engine.
It is inside of the fuel tank.
change your fuel filter.
YES, that would be a TBI / Throttle body fuel injection engine.
Approx 35 gallons
In stock trim, a SRW will be around 7200# with the fuel tank full if it's an 8' box, short box will be 200 or so pounds lighter. A dually will be 300 or so pounds more.
my 2003 f350 dually avg 13-14 combined
1989 F-350 Standard & Crew cab 4x2 - Fwd tank 19 Gallons , Rear tank 18.2 Gallons 1989 F-350 Standard & Crew cab 4x4 - Fwd tank 23 Gallons, Rear tank 18.2 Gallons All other 1989 F-350's have two 19 Gallon tanks.
Gasoline engine : Yes, it is mounted on the top and inside the fuel tank. Diesel engine : No, it is on the driver side of the block.