Hi Dan,
I doubt "heavely" if that statement is correct.
In my opinion, that Oilcab was NOT painted silver NOR coated with (s shining) clear paint.
As far as I can see on my unchanged (and untouched) 600, that cab was aluminium without any paint(ing) .... neighter the camcovers were ....
May be Chris could tell us some more details ...
These motors came never like this one from the plant :