I recently was finally able to replace my valve cover gasket so now I want to get rid of the all the oil thats been pooling up for years. I bought O'Reilly heavy duty engine degreaser. Now a while ago, I was adding some oil to my car while it was hot and some oil spilled on the headers and started on fire. Lesson learned, but my question is, when I use the degreaser on the oil deposits and it lands on the headers, will that start on fire? Do I need to wash it off with a hose when I'm all one, and if so, what should I cover up, the alternator? Thanks.