My '00 4.0L OHV 4 DR with 4WD and 5 speed came with a 19.5 gallon gas tank.
Performed the following modifications:
Gibson catback exhaust, K&N FIPK Gen II, Taylor 8mm Spiro Pro sparkplug wires, BBK 66mm TB, Bama Program and changing the engine, differentials, and transmission to synthetic lubricants. Still saving my $$$ for a set of JBA headers.
My gas mileage varies 17-20 Hwy and 12-14 city.
My goal is to get 22 mpg which should be possible.
Generally I shift by or at 3000 RPMs which may be why my mileage suffers.....
2000 Ranger 4.0L 4dr 5 spd 4x4 w/ ORP
Modifications: 265/75R16 BFG AT KO, Detroit TruTrac l/s, K&N FIPK, 66mm BBK TB, Gibson 2.5" catback exhaust, BAMA SCT Tuner, Underdog Performance 25% underdrive pulley, James Duff Traction Bars, Taylor 8mm sparkplug wires
Future Mods: JBA Headers