What is the actual size of my gas tank, I have a 1992 F150 shortbed with one tank does anyone know what size tank I have?

 

If its a 4x4 its 18.2 gallons. If its a 4x2 it could be 16.5 or 18.2 gallons

 

Thanks man but I don't understand because when its on empty it only takes 10 gallons to get back up to full?

 

How empty are you taking it because i have a 18 gallon tank on my 95 and if i fill it up as soon as it hits the red i only get about 14 gallons in because there is some leeway there. Also there's a possibility of a malfunctioning gauge

 

The other day when I pulled up to the pump it was sitting on red and it only took 10 gallons to fill up. It is 4x4 also

 

could possibly be that the float is stuck in the tank

 

Almost nobodys gas gauge works on these trucks.