SilverLexus
Super Enthusiast
This is interesting since I hv Z2pro and Z8 ready for a trial, but my ZFX dried up recently. I refuse to spend almost $30 for a new little vial.
ZFX is $19.95 and lasts a while but it has an 18 month warranty from drying out. Sal will probably just send you a new vial.
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I was mistaken about ZFX - it does improve drying time but as ZaneO suggested it helps with bonding so the performance increases as well. It creates more durability, more slickness, and higher gloss retention.
Having said that, I used Z-2 Pro without ZFX on my wife's gold Camry and it looks incredible.