I hit the three stickers just behind the gas cap with a heat gun for 15 - 20 seconds and then peeled them off. A hairdryer will also work but may take a bit longer to loosen the stickers.
Then I buffed the residue with Goo Gone a couple of times and now you can't tell that there ever were stickers on the tank.
Peel the stickers off, dip a cloth into your tank, lightly rub the gasoline over your the glued residue, it should mostly come out, then use a cleaner to remove the gasoline before it can harm the paint, and throw a coat of wax on it, youll be good to go in about 5 minutes.
Thank you, I did mines this morning using this technique and it worked perfectly. No need to buy any kind of product and it looks like nothing was ever there.