mafpo said:
..What product provides the best protection, so we can keep the paint looking great for many years?
Fellow Audi nut here
First, I'll note that most products will need *some* kind of refreshing after 3 months or so.
To be honest, I've been able to keep my wife's '01 A8 in great shape with just good ol' Meguiar's #16. That car gets used *hard* including long road trips (in all kinds of weather). A can of #16 lasts me around a decade, so a) it lasts prettylong and b) it only takes a very thin application of the stuff.
Conversely, the UPP I like on my '01 S8 (and which I'd consider similar to the Wolfgang) doesn't protect all that well and I have to do far more redos even though that car is basically a garage-queen that doesn't go through nearly the same conditions as the A8. Gee, an old-fashioned wax can protect better than a modern sealant!
But the *best* protection I've ever experienced has to be heavily layered Klasse Sealant Glaze (6 layers). No stains, no etching, even, I think, less wash-induced marring. BUT...gotta layer it to get that much protection (at least 4 layers IMO). And looks-wise, well...I dunno; it's the only LSP I disliked so much (on Audi silver) that I stripped it off and applied something else. That's totally subjective though, and you might like it just fine. It looks fine on my silver Mazda.
Six layers of KSG will last a *LOT* longer than three months; I don't redo my KSGed minivan (daily dog-hauler, gets used *really* hard) until the beading starts to change to sheeting, and that takes so long that most people would need to repolish long before then anyhow.
For good protection with fewer applications, I do *VERY* well with Collinite 476S and so far I'm also very impressed with FK1000P. Either will last for months.
IME the best way to do Collinite is a base of their 845, then a coat of their 476S, then maybe some infrequent refreshers with the 845 as needed (the 845 is sooo easy to use that it's not a PIA).
I apply the FK1000P over a base of KAIO or ZAIO.
If I were doing that Mini, I'd choose between the KSG, the Collinite, and the FK1000P. The feasibility of doing multiple layers would probably determine whether I'd go with the KSG. Any of those products will protect great and a single can/bottle will last a long, long time so any of them will be very cost-effective.