I can work on most my stuff, probably not rebuild a motor w/o some help but could get pretty close. I always just watched over my Grandpa/Dad/Brothers shoulder and it got me along pretty good. They got rid of Autoshop at my high school while I was there or maybe just before so that sucked. As far as oil changes on our cars, I take them in because you don't really save anything by doing it yourself nowadays and most come with free tire rotation.