RubenTheRogue wrote:was washing the Rogue today...gave it a really good scrubbing. oh, 2008 Silver Ice...
Started noticing little spots, pencil lead size & smaller, of rust. Yes, rust. Very noticeable once I started looking. All over the car, on the doors, roof front fenders and on the plastic bumpers and mirror covers too!.
Howdy Ruben... I don't know what you could of gotten into but your little spots aren't rust.
Rust is a commonly used term to describe iron oxide. Rust is also term used to describe iron in its corrosive state. For iron to become iron oxide (or rust), three things are required: 1) iron, 2)water and 3) oxygen.
While water and oxygen are a given... the iron is not. The "plastic bumpers" and "plastic mirrors" on your Rogue are neither iron or made of metal and therefore they can't rust.
As philipa_240sx indicated the likely cause is rail dust. However, since it sounds like the spots were on everything facing into the wind as you drive it could also be you were either following someone losing transmission fluid or maybe hydraulic oil from a truck. Both are caustic to paint finishes and could appear as an orange stain. Also some bugs guts have also been known to etch a paints finish if left on the surface for an extended period.
Anyway... if it was only on your fenders I might be concerned... but on plastic body parts... it can only be rail dust or some other staining compound.