Any thoughts or advice? When I fill it--it reads full. After a half day of boating it drops to 1/2 a tank. If I go to fill it up--it only takes 5 gallons. I have a 22 gallon tank according to my owner's manual. After a full day of boating (or two half days), it reads empty. If I go fill it up, it will only take 10 gallons.
Is the sender mounted inside of the tank?
Is the sender mounted inside of the tank?