Here at Jr's Truck Repair and Undercoating we want to help protect your vehicle from corrosion and rust caused by road salt, sand and moisture. We use NHOU (New Hampshire Oil Undercoating) which is an eco friendly, nontoxic, all natural, non drying highly refined mineral oil. NHOU is self healing and is constantly creeping, remaining active to continuously repel moisture and keep it away from the metal surface. It penetrates into even the tightest seams and spot welds delivering an effective and comprehensive protection. It is applied to the undercarriage, rocker panels (inside and out) inside doors, trunks, lids and tailgates. It also helps to prevent drying of your brake, fuel, ac and power steering lines.