The reason I mention it is I race toy cars offroad (1/8th scale buggies) and if you spray WD40 on them in an attempt to clean them or keep mud/dust off it will do precisely the reverse.
GT85 can be sprayed on, left to dry a bit and blasted off with an airline if needed and it will stop crud sticking to the car as badly. It's great for making plastics come up like new as well  I did my wheel arch liners with it!
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===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD===
2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus
2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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