The equation also includes evaluation of " total cost "
Comparing 200 hp Etec G1 to 4 strokes, the 4's get considerably better fuel economy in most ranges of running.
The 4's however require more frequent and more expensive maintenance, so it becomes a matter of how many hours running to make up for the additional costs.
The Etec G2 fuel economy jumps another 10-20% closing that gap.
So for use on a V, I'd say the ultimate fuel economy would come from a 150hp 4 stroke, providing a cruising range well over 300 miles on 60 gallon tank.
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