I searched around for a while, but couldn't find anything other than the usual billet aluminum polish debates. I have a 65 mustang with a Billet Specialties Tru Trac serpentine system on it. The main bracket/frame that supports all the engine accessories as well as most of the accessories and pullies are all polished billet. A while back, the motor decided that it didn't like its current head and radiator setup and proceeded to puke hot coolant all over everything while someone else was driving the car. It covered everything under the hood with a film of cooked on coolant and water spots. I've cleaned most of it up, but the serpentine system is proving difficult. Mothers billet polish and elbow grease get the parts that I can reach pretty well, but it is cluttered in there with ac, powers steering, alternator, and idlers, all of which are billet, and everything else in the way, there are too many areas I can see but not reach. Is there a magic chemical that will save me from disassembling the entire system to get to every nook and cranny? Anyone who has worked on a early mustang with lots of mods can tell you that there isn't much space in the engine bay. Getting the system out of the car means pulling the radiator and everything too, so I'm trying to avoid it, but I want it cleaned up pretty bad, so I will if I absolutely have to.