I've heard and read mixed reviews on Ziebart. ZB is a undercoating as Fluid Film, Krown, and ww,ect are rust proofing.
ZB hardens and will chip and crack leaving water get underneath the coating and trapping it there, as rust proofing you need to do every fall
My 2012 JKU I had a professional coat of FF applied at a dealer, and after that I did the 2-3 spray can thing every Fall. When I sold my JK last year she had 0 rust. I also had the Bronco done last Fall, the shop I used said I could come up this year and for $50 bucks they would respray. Even though we had minimal snow last year, the state of PA made sure they put plenty of Brine down anytime there was even a 2% chance of snow. So it is good to do something!!!


Never had it chip. I had a 95 Suburban that did have rust when I sold it in 2017. Need to consider the source of the articles.