I just filled my R with 18.5 gal of gas. The pump clicked at 17.75 and I squeezed the last bit in. The O manual says that the tank will hold 18 gal. Where did the extra go? In my minds eye I can see the filler neck It might hold what a gallon? Does anybody know it there is a vapor filter co connected to the neck, and if so can fuel get in there?<p>This was all caused by my inattentiveness. When I pulled into the gusstation (one word witth a yiddish accent) on fumes, the needle was buried below the left red with orange light on and no chime. The trip computer said I could go ---- far on my remaining fuel.. Any idea how much could have been left. Certainly no more than 1/2 a gallon.