Searching for answers for a 2012 f350 Super Duty 6.7 diesel fuel tank gallon size. Every search i find 35 gal. is size tank for my truck but i am only able to squeeze roughly 22 gal. at the pump and my MPG to distance is pretty close for the amount. I haven’t found anywhere stating a 22 gal. tank. Am considering upsizing my tank over a drag up tank. Having to pull in for fuel every 150 miles while pulling a 40’ fifth wheel is a pain in the butt. Just wondering if anyone knows of a smaller size tank that Ford installed on the 2012 Super Duty.

 

Your local Ford dealership Parts dept would be better able to ans that question.