What is your v8 Suv? And 30-35mpg, well not sure about that, but the base line is to slow down, 55-60 mph, in city try to use less break, less acceleration, by enticipating the light traffic, the traffic. Also, if your manual, try use your engine at the lowest rpm possible, and since its a v8, you probably have planty of torque at 1500 rpm. If you go downhill for like hall a mile, try neutral.
Welcome to GS.
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