1998 Ford f150 extended cab mpg Source Source Source Source Source Source Source Source Source Source Read Also: 1998 Ford f150 xlt 4x4 extended cab 1998 Ford f150 4x4 extended cab 1998 Ford f150 extended cab 1998 Ford f150 xlt extended cab 1998 Ford extended cab truck 1998 Ford f150 extended cab subwoofer box