1993 F350 crew cab 4x. 7.3l w/banks. I have the dual tanks option on my truck. What is the total fuel capacity? Both tanks were showing empty yesterday but I was only able to put a bit over 26 gallons combined in the 2 of them.
You also have a 93, the sending units could be going bad and giving you wrong levels to the gas gauge. Would also help fix the dual tank problems of the non-operational tank getting fuel fed to it, not sure if the diesels have that problem though