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Message: <blockquote data-quote="RaYzerman19" data-source="post: 1006352" data-attributes="member: 18388">I've done a fair bit of light researching of (ethanol) fuel problems and additives to cure this and that over the last couple of years.  I ain't no chemist either, but I like the technical details posted and the advice to tear down the carbs if a Seafoam soak doesn't work.  However, ever try to remove glue residue with lacquer thinner (toluene, or harsh solvents)?  Doesn't work and evaporates way too fast.  The slow acting solvent that works the best is naptha, and it won't harm much, including your precious paint.  That's why the gums in your fuel system will dissolve over time and you see better performance in carbeureted machines.  And guess why people love WD40..... yep, naptha.The other problem we get is water in the fuel from ethanol fuel phase separation, and isopropanol will absorb more water than etha- or metha- alcohols.... or so I have read.So, it all makes sense to me.</blockquote>