"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.

I am not asking for precision, but rather a ballpark.
Well,
I had a Bayliner Trophy 21 ft cuddy with an OMC 140 Chevy engine, when
cruising at about 22 mph I would get around 4 to 5 MPG in fairly calm water.

I don't normally measure distance or GPH as I am usually fishing and don't
care, but on a few 100 mile plus trips I did take I did get as stated.