Sure why don't u do the test described earlier for your own. take a empty coke can flip it up side down,pour etho sheild in, rub will find it eats the ink up which i believe is carbon based. put a few drops of water in it and light on fire, u will notice the water not boiling but vaporizing with solution.Also check flame will be clean all willburn. then try the same thing with sea foam and star tron but make sure to stand back. Not a salesman. master tech and lpg specialist. Just wanting to view some of the things people believe and don't believe about fuels,oils, additives, ect.