The return of our Readers Rides Truck of the Month contest is here, and it's now presented by Shell Rotella. Winners of the contest will get to see their truck with a full feature in the magazine, that's right, the last diesel magazine on newsstands in North America, Diesel World. Monthly winners will also be entered into a competition where they'll be in the running for a cover feature and the title of the Shell Rotella Truck of the Year. To enter all that diesel owners need to do is submit their ride on dieselworldmag.com. Once entered a voting contest will ensue where anyone can place a vote for their favorite diesel ride.