golfgeek65
New Member
Did my first shakedown cruise today. I thought the GPH numbers were for both engines but the estimated range looked to about half of what I thought it would show. Had lots of fluctuations with the float in the tanks. Way off of what I expected. I have the twin Merc 5.0 MPI 260 HP with B III outdrives. Test data indicated I should get 1.4 to 1.5 MPG. I am not seeing that in numbers displayed today. Both engines have been recently serviced before I bought the boat. Not sure what to think.