-Removed-The belief is actually that hell is not a literal fire at all. It is compared to a fire because that is what might have some kind of parallel with it.
Hell is more about the loneliness and total isolation from God's love.
so it's "fuel" is that there is none of the fuel of God's love and presence.
Of course, this is speculative as we do not have much to go on concerning the nature of hell. But the very premise of this question is wrong.
Originally posted by @philokaliaYou appear to be using a person who agrees with you as a proxy ~ yet again ~ so you don't have to confront the poster who actually 'preaches' the thing you disagree with?
The belief is actually that hell is not a literal fire at all.