"TSC" wrote in message
...
I know it is a tough question based on driving habits, etc, but how far
will 20 gallons go with a 19 foot cuddy I/O with a 165 hp four cylinder?
Figure calm water bay usage.


It depends entirely on what type of usage. For water sports, where you're
constantly on and off plane, I would venture a guess somewhere in the 2
miles per gallon area. On a steady cruise at optimum cruise speed, you
could easily double that number.