guys i know this is prob a silly question but the gf's dad is coming to see us as part of a trip round ireland and northern ireland. he wants me to give him a hand to wash it and while i know my buckets and mitt will be ok i wnat to know will the chemical guys stuff (i have loads of different stuff from them but all chemical guys) be ok to use on a classic 'e' type jag. with it being a classic i dont want to offer to let him use anything that could mess it up. ie wheel wax, wax selant etc. help