I have a 2002 Carver Mariner 350 with twin 6.2 MPI MercCruisers. Has anyone tests for fuel consumption at different RPM? I am try to determine the best cruising speed for a long trip I'm about to do.
Thanks!
I am about to go on a trip down the Potomac then into the Chesapeake. Do you think I'd use more gas by going 20 MPH (about 3600 RPM) for 5 hours or 10 MPH (about 2400 RPM) for 10 hours? I have the dual 6.2 MPI on the boat.
Thanks
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