If you like to have something similar to "magnesium gold " look you could use a brush and Alodine and this will give you a gold yellow aspect , not like a paint but like and clear anodising.
And using some Wd 40 on this leave the gearbox as they where in the 60's coming out from the foundry
(Alodine is not an acid at all ; is just a water coloring stuff to treat aluminium parts before painting in industry and used too on aluminium inside parts in light plane wings)
And using some Wd 40 on this leave the gearbox as they where in the 60's coming out from the foundry
(Alodine is not an acid at all ; is just a water coloring stuff to treat aluminium parts before painting in industry and used too on aluminium inside parts in light plane wings)