This instructor's guide contains materials that are intended for use as part of the regular auto mechanics curriculum and that provide information necessary to convert a gasoline engine with a niminum of modifications to successfully be operated on ethanol alcohol. It accompanies a student guide that is available separately. Contents include a summary sheet with an introduction, objectives, a list of needed teaching/learning materials, suggested instructional methods, references, and suggested activities; an activity sheet with answers; student evaluation with answers; a performance evaluation sheet; information sheets with photographs and diagrams; and additional reference material. (YLB)