ok first of all get some ngk plugs they are the best at 199 each and go to walmart and get quaker state with slick50 high millage in it a 1030 blend or 530 and get a fram filter a nother thing is chage your fuel filter its on the fire wall, change your plug wires , distributer cap, do an engine flush that you can buy at walmart or any auto parts store, make sure your tires are at right pressure and have good ruber on tham, check to see if your exaust has any holes that can make thinhgs abit ruff on the gas,you may also want to make it as light ass you can get rid of stuff you dont need, these are things you can do to improve your gas millage