Guest: Sam Mahdavi, Sam's Garage (Part 2)

On today's show: 5 essential diesel maintenance tips; the history of WD-40; turning a technical college training into a business career; plus part 2 of Motortrend's Sam Mahdavi, from Sam's Garage. Informative automotive buffoonery with Bud and Tim, sponsored by Year One, the muscle car experts, Concept One Pulley Systems and Lanier Technical College.