If anyone is as anal as I am about the engine compartment and other plastic and metal components of your Shelby here is a great tip. One of my clients detailers recommended Pledge furniture polish for all metal and plastic parts. Works great and does not leave a greasy film or a bright shine. Brings out the natural tones of all metal and plastic parts. Used it on my Super Charger and was really impressed. At first I thought he was nuts but gave it a try and am glad I did. I prefer the cedar version over lemon, but will look to see if a non scented version is available.