We’ve all experienced that magic moment when, after countless frustrating hours of experimentation and racking your brain, the object of our attention starts working. The 3D printer finally produces ...

Viewer-submitted questions for The Car Doctor: Q: I have a 2011 Hyundai Sonata GLS, which goes through a lot of oil. I am adding from 5 to 10 quarts of high-mileage oil between filter changes. I have ...