Any RustProofing, Underbody coating experience or thoughts?

[Pryme]

8 hours ago, Kerry Pulaski said:

On my '24 HD, I have spent a lot of hours under it, adding wiring, rear anti-sway bar etc. The frame vertically is wax dipped, seeing the drips from cross-members.

Still they are dipping a non-phosphated or oil cleaned bare metal frame. Thus this goooey wax will flake / fall off in a year or so, still being sticky to the fingers.

All my HD's from 2013, the coating flaking off, 1 to 2 years latter, would still stick to my hands so well, needed Go-Jo or paint thinner  to get it off. But would not stay adhered to bare steel.

The frames must be chemically cleaned / dipped, before the black wax dip.

I deal with metal welding, cutting and fabrication over 45 years.  GM has a problem with this process.

GM  WILL strip and re-coat your frame IF you complain within the warranty. They did my new 2013 Dually, after I found out, seeing another customer's truck lifted off the chassis at my dealer.

I’m at exactly one year with my truck and the wax looks exactly the same as on day one. That’s just my experience though.