I cover my tractor in fluid film (its like a honey consistency when cold, more free when warm) for winter snow removal. its still on the tractor today and have been tilling the garden. I am surprised because its not covered in dust.
I doubt you would want to spend the money on fluid film.
maybe saturate a cloth with oil and just wipe everything. I dont think it would run to much.
not sure I would personally go thru the effort for a vehicle
but if it did get to dirty a wash would be easy
