Im new to the forums, and this subject might have been disscussed already,so if someone could give me the link to it or tell me about it I thank you. All of the gas stations around here have ethanol in the gas. Someone told me that this is bad for the 4-stroke dirtbikes because there not designed to run this type of gas. I didnt think it would matter as to most of them are 10% or less ethanol content in the gas. Just wanted to know if this was true or not.