draglink
Junior Member
Proper primer for aluminum is zinc chromate. Two coats, first coat up and down, second coat side to side..that way there are no highlights. There are several other types also, including epoxies, but the US Navy uses zinc chromate ... and most of their equipment seems to get a lot of salt usage for some reason.
Exactly what I did when I painted my half tower on my 236 Mako. Followed the 2 coats zinc chromate with 2 coats of Interlux Perfection.

Closer
