I agree … in a post apocalyptic collapse everyone will be scrambling to control fuel reserves … but the only places that will occur is wherever the oil or raw resources are located in the ground. For the first few years, everyone will fight for whatever fuel is lying around in tanks or storage facilities. After that everyone will go after the sources because none of it will survive being transported anywhere far from where it is manufactured. Everywhere else that is not within about 50 - 100 km of a fuel source will revert to the middle ages and will be using horses, swords and bows and arrows.

A better use for any fuel that anyone could have is to use it as a weapon like Greek Fire … or mixing it with wax or styrofoam to use it as napalm for offensive attacks or defence against attackers