The fuel tanks on the International chassis coaches are kinda fun after you get accustomed to how they work. The right tank feeds first and then, at a controlled level monitored by sensors, the leveler pump will pump the fuel from the left tank to the right until the tanks are level again. On long trips, I get a kick out of watching the fuel gauge appear to fill itself up over and over as the fuel gauge goes down, then up, then down again.
I did have an issue with mine. The pickup tubes assembled from the factory were 16" and the tank is 19" deep. I learned this the hard way by running out of fuel in the middle of nowhere. International has since change to the proper pickup tubes and all is OK.
Like Jim Bob says, always fill the right tank first since it is the first tank that delivers fuel to the injectors. You will get accustomed to the way it works fairly quickly. We always go to truck stops for fuel since they have the dual island pumps. We have signed up for several frequent fueler programs since we usually put in a hundred gallons or more when we stop.
As far is mpg, I get around 8-8.5 mpg running 70-75 towing a 3700# Jeep Wrangler. Now that diesel prices have gone up, I may slow down a bit so I can get better economy (but I doubt it). I just love to let those horses run on the Interstate. I do know it will bury the 85 mph speedometer but don't make a habit of going there very often.
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2008 SuperNova (6331)
2011 Jeep Wrangler (Toad)
Now: 2011 Winnebago Journey Express
2011 Silverado 4x4 Texas Edition Extended Cab (Toad)
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