35 gallon
My 1992 E150 has a 35 gallon tank so I'm guessing your E150 is the same even though it is only one year newer than mine.
20.86 Gallons
12.8 Gallons
28 gallons
16.0 Gallons
20 gallons
98 Ford Escort gas tank holds 12.5 gallons.
( 26.0 ) U.S. gallons in a 2001 Ford Windstar gas tank
12.4 U.S. gallons on a ( 2012 ) Ford Focus
In a 2003 Ford Expedition : ( the gas tank size is 28.0 U.S. gallons )
about 18 gallons.
22.5 gallons