Yes they do, first couple things I did were new roundels (for the key too!)

Four8, to be simple a sealant is a synthetic product made to mimic the shine of a traditional natural wax but be longer lasting and more durable protection in harsher environments.

Your friend probably used the 3M perfect it line, which is a compound, polish, and finishing wax. When he says 3 stage he is talking about paint correction.

You can wax/seal your X from here on out with whatever you'd like, pick your poison. Applying sealant is much like applying wax, apply, allow to haze and then buff residues off by hand. Will leave a super slick surface.

I also have a can of Sonax Polymer Net Shield and I love it because of the durability, but it's a different application method and leaves the surface not as slick to the touch, but it's very dirt/dust repellant and lasts for months. I tend to use it on wheels and door jambs and such right now, as I'm using up some older products on my shelf (I still have a bottle of Power Lock from 2010)

Pm me if you need some tips and/or questions so we don't clog the threads

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards