Besides Kreeme, what other products are there for cleaning rust out of the inside of my gas tank?

I hear Kreeme is good but it flakes off if not done right. What other rust removers/tank liners are there?

Removing rust from a gas tank can be accomplished in a number of ways. Different strategies include using abrasives such as gravel or washers, using acids such as muriatic acid or vinegar, using a battery and washing soda, using a tank coating kit, or using a combination of the aforementioned strategies. All of them work fairly well.