A true 'Master' mechanic is intimately familiar with the intricate workings of innumerable makes and models of cars, right? Yeah, but can they help Emma from Montana figure out which 'thingie' to put the blue liquid into? Let's all find out on this episode of the Best of Car Talk.Get access to hundreds of episodes in the Car Talk archive when you sign up for Car Talk+ at plus.npr.org/cartalkLearn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy