Uhhhh....parts not rusting?

Redoing "everything" on my 69 Barracuda. The brakes...well, Most parts are painted with Eastwoods brake grey. Other parts like the adjuster I have put in my bead blaster and cleaned so pretty...bare metal.
The problem is as many of you know that brake fluid "eats" metal.
My thought was to give the bare metal parts a good long soaking in oil (in this case 40 weight) then wipe them off and put it together.
Will this help to prevent rust? Any thought or comments are greatly appricated.
Thanks...Lug.