I used to work for a moving truck company and the 35 ft. GM3500s powered by diesel usually returned 8-11 mpg while the old gas powered 20 ft F-350s with the 460 motor usually did around 5-6 mpg. The 20 ft. Ford V10s would usually give back 10-13 mpg so that's what I always used for personal use...haha.
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1988 Honda Super Cub 50cc
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