Do you have anything that indicates exhaust gas temperature for each engine? (Pyrometers) EGT is a pretty good indicator of load on a marine diesel, if there's a large difference between the engines that would help point to one engine actually using more fuel as opposed to leakage. At the amounts you mention though, I would think a leak of many gallons would be fairly obvious.
__________________
" Any day with a boat ride in it is a good day"
|