I blast it for a couple minutes with a heat gun (hair dryer type), helps loosen the glue. If there is glue left on the tank, use a little more heat and dab it with the glue side of the sticker, that will pull off the rest.
after peeling of the sticker, you can apply a light layer of peanut butter for about an hour then the glue will come right off. preferably creamy/chunky may scratch.
I blast it for a couple minutes with a heat gun (hair dryer type), helps loosen the glue. If there is glue left on the tank, use a little more heat and dab it with the glue side of the sticker, that will pull off the rest.