any all purpose cleaner to take off the rubbish...
i use either Meguiars Super Degreaser or Megs All Purpose cleaner.
Cut 1:4. spray it on, leave it for 5 mins or so. Then clean all the areas off you can carefully with a good brush and a microfibre wash mitt.
then rinse off. let it dry for 20 mins or so.
then something like 303 aerospace protectant will do the trick for dressing.
spray it on, leave for 5 mins and then wipe completely dry with a microfibre! ;)