With regard to wheel cleaners, unless used with a very weak dilution (10:1), even Bilberry, Smart Wheels etc... are still quite strong. Yes they are acid free, but they are quite strong Alkali which is just as damaging (pH 12-13) to polished faces on the Mk6/7's
My advice would be to perform an initial deep clean by performing the following steps:
- Clean as normal by using Bilberry/Smart Wheels etc...
- Use a tar remover (Autosmart Tardis/Auto Finesse ObliTARate are both excellent)
- Use an iron remover (Dodo Juice Ferrous Dueller is excellent, as is ValetPRO Dragons Breath)
- Clay the wheels as you would the bodywork
- Polish using Auto Finesse Rejuvenate or a similar cleanser
- Seal with Auto Finesse Mint Rims/Bouncers Looking Sweet (on offer at Forum Sponsor Waxamomo at the minute! -
http://www.waxamomo.co.uk/Item/BouncerSweet)
I have tried Poorboys Sealant and didn't have a great experience, i.e. didn't see more than a month durability from it. Also, using wheel cleaners will degrade the protective waxes/sealants so once protected, just a normal shampoo dilution would do the job perfectly (in a seperate bucket of course!)
Sorry for the in depth post, just thought I'd try and help as best I can. If you need any more help, please fire away!
Jon