When you're pulling up to 12,000 pounds through the clay, everything depends on those two huge rear skins. Note the two brake pedals for differential brake action and long headers tuned for low-end ...

Mobil Delvac isn’t the only top diesel oil name you’ll see on the tractor-pull circuit this season. Since I blogged about Delvac’s involvement as sponsor of the big Tomah, Wis., tractor pull in June, ...