I bought a '94 60HP Johnson last year that had all kinds of problems but is now fixed and ready for the water. It's on the back of a 16' Starcraft SS. Just wondering what kind of fuel consumption I can expect. I understand there are many variables but for this exercise let's assume 3 adults are in the boat. I have a 6 gallon tank in there now but depending on consumption might look at getting a bigger one.