Hello all I just picked up a 2014 Ram 3500 with Cummins and it had a little under a half tank showing on the guage. I decided to fill it up and ended up putting 35 gallons in it. Any idea what size tank this thing has? I couldn't find any info in the manual.

 

Does it have dual tanks?

Go here, feed it your VIN, (all caps please) and that'll tell ya what it came from the factory with. That's gotta be a big tank, or you have two, or, the fuel gauge LIES!!!

 

Finally figured it out, got under the truck and noticed it had a titanstank.com stamping. Looked it up and it is in fact an aftermarket 55 gallon tank.