Interesting. I was told I had a 18.5 gallon tank. What years had the 16?
I once went 307 miles before I got gas. It was a long stretch of no gas Ohio and luckily made it. That is why I always assumed I had the 18.5 gallon tank.
my comment on the 16 gallons the max you can fill it was why I said 16 gallons .. so with your MPG do not run it 280 miles unless you like running out of gas and perhaps towing it changing the fuel filter.
I would fill it @180-200 miles of running after its filled ..
not good to top off any fuel tank to the max then park it as the vapor canister system does get damaged..
not sure on MPG you get as the weather changes.. on my T4R in winter temp 20F I get 16MPG , then when I go south the MPG is 20 MPG ....@75-90F..
when you fill it do the math on MPG ..