This week on Car Talk, Robin is racked with guilt after taking her Corolla to the dealer for its 30,000-mile service, rather than her trusty mechanic. Should she 'fess up before her mechanic notices there's someone else's grease under the hood? Elsewhere, Wendy's mechanic is so baffled by her Golf's noise that he's consulted a Ouija board; Dee tried to get rid of his truck's noise by driving it into the side of a car; and Amy's husband is brilliant at everything--except keeping his car on the right side of the road. Also, should Scott listen to his uncle's advice and disconnect the odometer on his Accord? (Do we need to mention that Scott's uncle is a used-car salesman?) All this, and lots more, this week on Car Talk.