Welcome. Overall, some are lucky and some are not. Glad to have you on the site.
I would suggest reading around the forums... we have a lot of good info here.
Welcome, you're not alone. I would recommend reading around this forum to see others experiences:
https://www.ecodieselram.com/forum/forums/ecodiesel-settlement-information.36/
It's a very specific truck for a very specific audience. It's bigger than a half ton, but not a 3/4 ton. It gets 3/4 ton mileage but doesn't haul as much. Not sure what Nissan was targeting.. but you'll notice all the "smaller" diesels are really for light/moderately heavy hauling and Nissan...
How many tanks have you tracked? I'm assuming it's similar driving and nothing unusual an the only change that happen is the "Flash" correct?
If so, that's a huge difference!