Like some others, I use denatured alcohol to store fish skins until I'm ready to mount. It's been a long time since I bought any. All I can find now is Denatured Alcohol FUEL. None of the clerks knew why FUEL is now included in the name, nor what has been added to require the term FUEL to be used. All I want is plain old denatured alcohol, and am very reluctant to use it if something has been added that will render it useless for preserving fish skins. Can anyone tell me what the difference is between denatured alcohol and denatured alcohol FUEL? Is the new stuff going to be just fine to store fish skins? Thanks for any help.