Hey guys I have a 1981 Yamaha enduro that runs great I´ve taken good care of it since it was passed on to my by my late grandfather. I have been riding it to and from work as a means of better fuel economy since I own a guzzler for a vehicle. I did that math and recently I have only been achieving around 20 mpg. I was wondering how I could improve that and also what the optimal rpm range would be to get better fuel efficiency. Thanks