eHow - Carshttp://www.ehow.com/guide_7-http://www.ehow.com/guide_7-cars.html.htmlwww.ehow.comHow to Save Money on Gashttp://www.ehow.com/how_4754037_save-money-gas.htmlA properly maintained vehicle running at optimum performance levels will save the most money on gas. Keep tire pressure and oxygen sensors maintained to save money on gas with tips from a certified master mechanic in this free video on cars and fuel economy. Published on 2/4/2009