Check out the "fuel stops sticky" at the top of the page and it will give you a list of the available fuel stops on the Cassiar Hwy as it is generally known. Some people will refer to it as the Dease Lake Highway. It is a very scenic road, more remote than the Alaska Hwy but a very nice drive. I have done it a half dozen times and never had a problem with fuel. If I go into Stewart, then I refuel there, if not then I stop at Bell II, Dease Lake, sometimes at Tatogga Lake (tends to be higher priced there) and have stopped at Iskut village store. Most all have both gasoline and diesel.