eHow - Carshttp://www.ehow.com/guide_7-http://www.ehow.com/guide_7-cars.html.htmlwww.ehow.comCar Detailing: Tree Saphttp://www.ehow.com/how_4959814_car-detailing-tree-sap.htmlWhen detailing a car exterior, never use razor blades or any abrasive materials to remove tree sap. Remove tree sap effectively with tips from the owner of a car detail shop in this free video on exterior car details. Published on 4/30/2009