If you can get it, run ethanol free gas. I am lucky and have a station around the corner that sells the corn free stuff. I run it in all my lawn equipment and in my carburetor pickup truck. the carb on the truck is a Holley street demon with a phenolic fuel bowl, basically a revision of the old thermoquad carbs Chrysler made in the 70s. The plastic bowl is supposed to lower fuel temps by up to 20*, I have been running the carb for two years now and very much like it.