Champion 3100 watt inverter gen question

We have used our champion 3100 with a 13,500 btu a/c overnight. Fill it up before you go to bed- I get up 6 hours later and it is still running. We minimize load besides the a/c overnight once we've done the final fillup of the genny for the evening. You are correct that the champion is gravity feed unlike the fuel pump in the Honda's so there is no commercially available long run tank for gravity fed generators that I have ever seen. You need to obviously secure the generator with a Cable and lock. We always run the A/C overnight camping in the south. The carbon monoxide comment is right on- there have been several high profile deaths from CO poisoning recently. Even if you don't have a genny you need one (or several, they are cheap) CO detectors on your trailer to protect you from the multiple deadly sources of CO both in and out of the unit. See my review and pictures on the Blain fleet and farm website.