I`ve only topped Speed with a few other products, but IME, Speed MUST be topped with something in order for it to last, it just will not last more than a few weeks by itself in my testing. With the products I`ve topped it with, I haven`t noticed a problem with bonding or anything like that so far, but I`m still trying other products to see what I get out of it. I think my next test is Speed + 915 ... now I think they will look amazing and hopefully last for months.
I consider Speed a sealant, but maybe I shouldn`t since it`s part Poxy, which is technically a wax, but normally I don`t top a sealant with another sealant, just wax for the topper.
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