I know this is an old post, but I just found it again, been out of the loop for while.
first off, fogging oil is to prevent the accumulation of moisture, it doesn't disperse water. WD-40 is "Water Dispersant" hence the name of the formula "WD". you should use fogging oil for strorage of the craft, after the initial treatment of WD-40 and complete removal of water from the engine.
sorry it took so long to reply, computer issues, moving to various locations, etc... lost all my links and contact info..