The Karma is made mostly from Aluminium, which does oxidate but does not rust. I don't know if the undercoating is really necessary or even effective on non-ferros material.drliu said:"Rust-proof undercoating!" (from Fargo, a great movie, if somewhat unkind to our friends in the north).
No, I don't have anything substantive to say about rust proofing the Karma... except I've seen the underside on a lift and it's smooth and looks completely armored (like the surface of the Death Star), so my *speculation* is that no rust-proofing is needed.
Congratulations and good call! I am really glad I put it on my whole car. Mine went straight from the dealer to the xpel installer. The "wax" that xpel reccomends is a terrific product; it is specifically made for xpel and besides whatever else it is supposed to do, it reduces the amount of dust that the car picks up by half.Michael said:I am soon getting my karma. Gonna put xpel on the whole car.