节油 Traditional form: 節油 Pinyin (reading): jiéyóu Definitions: to economize on gasoline fuel-efficient Characters: 节 - festival; knot, joint; segment; to economize, to save 油 - oil, fat, grease, lard; oil paints Traditional characters: 節 - festival; knot, joint; segment; to economize, to save 油 - oil, fat, grease, lard; oil paints