"...where to find fuel in a long-term emergency..."

I suspect that in a real long-term emergency those with fuel will know the value of it, and guard it. Guard it WELL. Think Mad Max/Road Warrior/Beyond Thunderdome. Farmers/ranchers in particular might shoot first and ask questions never. In the gas shortages of the early 70's and 80's there were fights ansdshootings at gas stations in Los Angeles, with lots of witnesses around. Out in the boonies, no witnesses, I would be really careful. Something to keep in mind as you break out the old syphon hose...