Any car that is driven in salt and I work on (my Ody, wife's Prius and son's Xb) get sprayed with fluid film NAS every year. I does get a little messy but it really does have a big effect on corrosion. I buy the 5 gallons from Kellsport (via Amazon) and use the Pro undercoat gun with compressor. The "C" channels get a tube stuck in them with the stuff coming out radially.
https://www.amazon.com/Fluid-Underco...fluid+film+nas
I used to use LPS3 but this stuff is better. It really wicks in and stays "wetted".
Ziebart is crap. Like flushing $ down the toilet.
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Former rides: 78 Scirocco, 80 Corolla, 79 Celica, 91 CRX, 90 CRX-Si,02 GTI, 87 944s, 86 911 3.2 Carrera, 03 MR2 Spyder