With fuel prices up to $3.39 here in MO I have to figure out why I'm getting such bad mileage. I constantly hear people talking about 20mpg and I want to know why I'm not. I started running 2 stroke oil in my fuel, my tires are topped off and I drive like a grandpa and I still don't see much over 15. I was running my Smarty on TNT-9 and put it back to Revo-9 because atleast with this it will get closer to 16, but still not 20. Does anyone know of anything that I can do to help me out?