Porsche Boxster owners...got a wheel/brake cleaner Q

Brad B. said:
I seal my wheels with Meguiars #20 Polymer sealant twice a year on the inside.



Does it last that long? From what I've been able to tell, it is not a true polymer like Klasse SG or Zaino. It seems to have silicone oils and regular waxes in it. I'm not sure though.
 
No, I think it does pretty much wear out by the time I get back to it. (at least on the surface) But the pores are still filled and that's the key. Nothing sticks very much in the holes and crevices so they clean in a snap.
 
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