Yeah, but not having to do it every year is nice. There's NH oil undercoat, but that makes a mess I heard, and then fluid film which is DIY.... But I'm not so sure how well that holds up
Some do it as an add on. Some just dip the frame in wax. Some dealers will do it prior to sale .....
But these guys sprayed literally everything underneath. Mine really had nothing.
@Cold MiserNew England Undercoat in leominster. was a thousand bucks but it lasts a very long time, typically only needs touch ups every few years. noxudol wax. Still looks cherry 2 years later.
RE: pick up truck undercoating
The shoulder seasons are just way too long now. Summer and winter take forever to get started. Summer is HHH but only for nighttime lows. Days aren't that warm and typically are cloudy and rainy.