Just spray all of the black parts of your motor with wd-40, don't worry about making a mess just spray directly on both sides. then wash your bike with a mit and bucket of soap/water like you usually do. Rinse and dry, after that it should be nice and black again. If you have any stubborn spots spray with more wd-40 and scrub with an old tooth brush. I've been doing this with my fatboy for 3 years and the motor looks as good as the day i got it.
The Uk is a rainy place and I use S100 cleaned followed by a good was off with fresh water then a wash with Simonize car wash using a micro mit, then another rinse, blow dry, polish and S100 engine bright, keep's the bike like new,
Thanks all for the help! I am going to give the WD40 a shot since I have already have it. I will see how that works and I will go for the S100 or the Pig Spit. Can I get that stuff anywhere or do I have to order it from somebody? Thanks again.