Surface rust is a non issue? Tell that to 2010-2014 F150 owners who are missing their cab corners and rockers from rust. look at every Ram driving around in the rust belt too. Best thing ford ever did was make those pieces out of aluminum and plastic. All of it starts from the inside. They are steel on the bronco. Also no amount of washing with save inner structures like these from corrosion. Salt gets places you can't at the car wash. At the end of the day, this really only affects you if you plan on keeping your vehicle. Also helps resale in 5 years when the underside still looks new.Wait till the dirt sticks to it if you think it looks bad now. Surface rust is a non issue. You will still get that even with fluid film.
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