maintenance, helpful? My mother is going to need a new car soon. She currently has a 2001 Ford Explorer Sport Trac. I've read all about this car and have found it reliable however i see that repairs can be high. Are these easy to DIY? Me and My father have done many car repairs (brake tear downs, oxygen sensors, audio, etc..) and we are able to do much more as long as we have the hayes books that guide us. Essentially, can a handy person make many of these repairs by themself