What is LINE-X? Can you add LINE-X to an older truck? LINE-X is a great way to breath new life into an older truck. Truck beds really show the age of a truck: dents, scratches, rust, those stains that won't even come off. A spray-on bedliner like LINE-X can restore your truck bed back to like-new condition. It can also help prevent corrosion and even out low spots or uneven paint on bed rails that have worn away over time. LINE-X fan and Diesel Power Editor-in-Chief KC Jones gives readers an exclusive look at adding LINE-X as it is applied to “Project Big White,” a 1995 Ford F-350 dualie. Featured on TruckTrend.com April 2020