Considering a Donzi 35ZFC with triple 225 Optis, 2001 models, and am trying to find a fuel burn rate.. I looked at Mercury web site, and have a little bit of info. from THT site, but would like to see if anyone else has experience with the triple combo.. EFI's sound like they do + or -1mpg if cruising at most fuel efficient cruise speed, but not sure about 225 Opti's. Thanx for any comments.