I have a new G2 225, awesome in every way, but the oil readings on the Icon gauge are a little surprising. The reservoir is supposed to hold 2 gallons, and the dealer put 1 gallon into the reservoir while setting up the motor. When I picked up the boat, the Icon gauge showed oil level at 59%. When I got home, I put approximately 1/2 gallon into the reservoir, at which point it showed 100% oil level. And in 6 trips so far this spring, it has stayed at 100%! Now, most of those trips involved very little running on plane, but yesterday I ran approximately 20 miles during the day. Still showed 100% this morning, so I pulled the starboard cowling and sneaked a peak at the reservoir. It appears that the oil level now is just below (barely below) the top of the “main” reservoir body. With the long filler tube, it’s quite possible that up to 1/2 gallon of oil could be held in the tube or “neck” alone. So A, my guess is that when I topped off the oil originally, I must have completely filled the tube, and B, the percentage reading on the Icon gauge must refer to only the portion of oil in the main tank, not the filler tube. Does this sound correct? I thought that when I got this motor, 2 gallons of oil would show as 80% on the gauge if it contained 1.6 gallons, but now I have doubts that it actually works that way....