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Message: [QUOTE="madman1234509, post: 451888, member: 3910"] The most Ive ever really been able to put in my tank from E was 25 gallons, and that was sitting there for an extra 5 minutes squeezing every little bit I could in the tank, slowly to avoid foam. I recently went from where I live, Mayfield, NY to Washington DC. Down I81, the trip one way was approx 450 miles. I filled up and squeezed 23 gallons into my tank. Made it to my destination in DC with "7 miles left to E". Now if you take into account that I may have had a gallon of fuel in my tank when I filled it. 24 gallons for 450 miles in a 8000lb+ truck with 3.73s, 35" tires, 2.5" lift, 3 people. Id say its not too bad. This was on the 275 LL tune from spartan at 75-80 mph. Anything over 75mpg and my mileage drops. 310 tune I get a tiny bit better mileage highway, but around town its worse. [/QUOTE]

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