Course content is very important. The accuracy of the marital is most important with how fast the technical trade is changing. The engine of yesterday is so far in the past but still around. Because of systems changes and refining drivability issues with today’s fuel; we will need to make sure that we understand the manufacture and not guess what they are trying to do. The problem that I see the must are instructors guessing what is really going on with the systems and not really understanding. We are better off not saying anything at all or say I do not no, than to give the students a guess to mislead them.