Member - Bradley replied:

will most likely be a wax coating for corrrosion protection (same as most euro cars). Valvolines 'Tectyl' is the closest thing we can get aftermarket (i think) . Can get bulk or in spray can, handy hint if using can, sit in bucket of hot water for ten minutes before spraying, otherwise the nozzle clogs and spurts etc..

madlee replied:

if it is a fairly new vehicle it could also be the coating sprayed on imported cars as a protective coating for shipping.they can get water running through the decks of the ship in rough weather.