 Howes. Clean, protect, and lubricate your diesel engine with Howes Diesel Defender. It'll provide superior cleaning, maximum lubrication, and a guaranteed increase in fuel economy. For all your other spring projects, reach for Howes multi-purpose lubricator and penetrating oil. With over 1,001 uses on almost any surface, it's the only can you'll need. Find Howes products at retailers and truck stops nationwide and visit HowesProducts.com for more information.