It's all about patience and bedside manner for Ron Ananian, The Car Doctor today as he opens the garage doors talking to Karen about her 99 Audi. Like Groundhog Day, (the movie) Ron has to repeat himself and guide this call to completion; FINALLY towards the end bringing it to a positive conclusion. His next caller is George from Maine with questions about a trouble code and problem with his 2001 Nissan Pathfinder. Ron and George talk Scan Tool and Technology circa 2014 covering Autel and Launch tools of that time period. Ron also talks about how certain scan tools have an advantage over others and the choices he has to make on a daily basis in the shop.  He concludes the segment answering an email about oil sludge in a 06 F350 Ford. He describes the caller problem in depth and then explores the possible solutions for engine sludge. The Car Doctor offers us tips and tricks offering a few different products that will help clean the engine out.  Find out more about us at www.cardoctorshow.com ,  @ronananian Also visit our You Tube Channel for auto repair tips and videos.    See omnystudio.com/listener for privacy information.