Ian, I suggest checking out Tamir's DeLorean site. http://entermyworld.com I don't know the exact link to the area in his site, but he describes how he detailed the underside of his car to look better than new. As I remember, I think he painted the cast aluminum parts (oil pan & tranny) with something like Rustoleum's quick dry silver. My experience with this paint on cast aluminum surfaces is that it makes them look like new bare cast aluminum. The paint also ages to keep looking like bare cast aluminum while keeping surfaces newer looking from then on. Although I haven't (wouldn't bother) trying it on parts that take a lot of heat such as exhaust manifolds. That is my opinion. Maybe someone else has a different one. Generally, I think Rustoleum sucks, but the quick dry silver variety is good stuff for this purpose. Walt Tampa, FL -----Original Message----- From: ian <ian@xxxx> >Has anyone any recommendations for cleanig the >aluminium engine block to get her sparkling again!