On your 1996 Ford F-150 with the 4.9 liter / 300 cubic inch straight six :
The regular cab version :
With short wheelbase ( 116.8 inches ) the front tank holds ( 16.5 U.S. gallons )
With long wheelbase ( 133 inches ) the front tank holds ( 19.0 U.S. gallons )
According to the owners manual
17 gallons or 19 gallons depending on model ( U.S. )
22 gallons.
I believe that is 17 U.S. gallons for the steel tank
mine holds 21 gallons so im pretty sure your hols the same
A 2004 F150 Super Crew holds 30 gallons ( 113.4 liters )
Ford Edge - 2008 model front wheel drive - 19.2 gallons all wheel drive - 20.8 gallons
According to the 2010 Ford Fusion Owner Guide : Front wheel drive ( 17.5 gallons U.S. ) All wheel drive ( 16.5 gallons U.S. )
For a 2012 Ford Fusion : Front wheel drive ( 17.5 ) All wheel drive ( 16.5 U.S. gallons )
According to the 2008 Ford Edge Owner Guide : Front wheel drive ( 19.2 U.S. gallons ) All wheel drive ( 20.8 U.S. gallons )
According to the 2013 Ford Edge Owner Guide : Front wheel drive ( 18.3 U.S. gallons ) All wheel drive ( 19.2 U.S. gallons )
Check your owner's manuel.
4x4 / regular cab / short wheelbase - 24.5 gallons 4x2 / regular cab and all Super Cab / short wheelbase - 25.0 gallons