A little update with pics now!!

[Pipe_Dream]

I always deal in gallons used per hour. My old 155 hp burned an average of 7 gph. On my first full tank to full tank with my new 200, I burned 5.4 gph in all-around use. If you know the rate at which your engine burns fuel, you can compute your range. But I would always allow at least a 25% margin for safety.