i have never really wanted to try it on my interior seats etc.. But i guess if the right dillution is there it would work,,,,I just mainly use it as a pre wash for my alloys and the engine bay....
i have supaguard alloy wheel protector on mine,,, i got a few tins from a mate,, not sure where he came across them though,,, seems to be doing an ok job so far,,, I have tried others rimwax etc all seem to do the same sorta job,,,
too be honest pretty much 6 of one half a dozen of the other,, each will do the same job,, It just depends on how much u want to pay,, Pm on its way