Rust and a random rubber band.

[murphyraptor]

Your truck must have gotten salt spray from being on a transporter. I crawled under mine when it arrived in sept and it had no rust at all.

 

[RaptorFan1988]

No rust on mine either - built in Sept. I do have about 50,000 rubber bands and counting though.

 

[Grayson]

I've found a rubber band at my first oil change on the past 5 Ford's I've had, including a GT350R.

I had rust on my 21 F-150 and I fixed it. I won't do it again even if it is cosmetic especially on a "premium vehicle"

 

[Flash1034]

I live in Montana and your truck has much more rust than my 2019.

 

[Fireguy144]

My 2019 was built in August... My rear end also had a little bit of rust.. I don't know why ..

 

[Badgertits]

I’ve owned 2 Gen2s, the 2020 I have seems to have a better coating on frame/tow hooks thicker coat & more like a semi-gloss, the 2018 had a matte finish on frame/tow hooks similar to what’s on the exhaust tips.

The 2018 had zero rust when I got it, the 2020 had only a couple small spots around diff- if you look around may find a thread where I posted some pics of the process/results but in a nut shell this is how I treated undercarriage/engine bay on both of em

Pressure wash undercarriage etc, really good, let it dry and/or used compressed air to speed process, timed this when I knew would have stretch of warm/dry weather

Once dry I used paper shopping bags/painters tape/plastic wrap to protect inside of wheels & fox shocks, put some cardboard underneath to absorb drips/overspray & first scuffed up
The rear diff/axle w/ sandpaper & a wire brush, wiped down w/ tack cloth, then gave 2 coats of rustoleum semi-gloss.

Gave it either 6 hrs or overnight to dry

Then went to town on everything underneath w/ cans of Amsoil HDMP- probably equivalent of 3 coats worth, used 6-7 cans lol. Now, after the first coat starts to set you start getting a buildup & while it’s kinda tacky to the touch it’s more like a beeswax consistency- doesn’t attract dirt/dust like fluid film, just rinsing w/ a garden hose typically removes that stuff. What you wind up w/ is really a semi-permanent coating- diffs/t-case/tranny/leaf springs/every nut/bolt/hanger gets covered, you don’t want it to get on shocks b/c on anything that isn’t black the Amsoil HDMP leaves a golden yellow color. It doesn’t seem to effect the black parts as much in terms of color, w/ the heavy coats I put on there’s a few spots like drips or whatever that sort have a yellow tint if you look up close but for the most part this stuff makes black metal blacker. Side note- spray some on a microfiber rag & use to clean up exhaust tips/tow hooks, works great for that.

On the top side of the engine bay & on the fox shocks I used Yamashield - this stuff goes on clear & can be sprayed on anything- rubber/plastic/electrical doesn’t matter, not as permanent a coat as the Amsoil so would touch up every year. This is a yamalube product made for marine application- I douse the hell outta my wave runners with it the intake grate/impeller & engine, theres nothing better for bare aluminum in particular. Impregnates the metal & forms some chemical bond - very good on engine block

 

[Frank N]

Ford went to rubber bands as a cost saving measure, the bailing wire and duct tape was getting expensive.

 

[Donovan]

Rusty Mcrust bucket.

Take that shet back to 1989 and have them redo that undercoating.

 

[JohnyPython]

Spray the underside with Woolwax.