BY TOM AND RAY MAGLIOZZI Modified: September 27, 2012 at 12:26 pm •  Published: September 29, 2012

TOM: And when you're delivering parts, our best advice is not to dawdle. When a shop calls for a part, that often means they have a car up on a lift, taking up space, with other cars waiting to get in and owners waiting for them.

RAY: So come in, hustle the parts off your truck, get your signature and get going. That'll make a better impression than regaling the mechanics with your review of the latest episode of "Downton Abbey." Good luck, Brad.

Bumps and potholes do more than merely annoy drivers. Find out what, and how you can ease the pain, by ordering Tom and Ray's pamphlet "Ten Ways You May Be Ruining Your Car Without Even Knowing It!" Send $4.75 (check or money order) to Ruin, P.O. Box 536475, Orlando, FL 32853-6475.

Get more Click and Clack in their new book, "Ask Click and Clack: Answers from Car Talk." Got a question about cars? Write to Click and Clack in care of this newspaper, or email them by visiting the Car Talk website at

(c) 2012 by Tom and Ray Magliozzi and Doug Berman Distributed by King Features Syndicate, Inc.