They have never been in contact with any oil. They have some faint scratches from sitting on the shelf but they are merely cosmetic and can be removed with a fresh coat of paint. Included are the original instructions and 8 Allen mounting bolts. The item "Larson engineering valve covers small block chevy" is in sale since Monday, August 16, 2021. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Engines & Components\Valve Covers".The seller is "9secsleepernova" and is located in Horsham, Pennsylvania. This item can be shipped worldwide.