Try oil resistant Loctite. 243 instead of 242.Haha. The olive oil thing actually started on my carry pistols. 1911’s need oil to run correctly, however I hate toxic crap on my skin, and don’t like even non toxic stuff in my clothes and hands, breathing it, etc. So, tried Olive oil one day when I noticed the pistol was dry, it worked well and have kept using it.
No, I generally not worry about rust on screw and recoil lugs. I do not want any oil or lube that can migrate to the action screws or base screws. I choose stainless when I can, and even better melonite.
With blued guns I wipe a light coat of oil on the metal except for the action thread holes, place in stock them use acetone on Q-Tips to degrease the threads again, then paint pen, torque and mark them. Unless the rifle gets absolutely soaked I do not pull it out of the stock. If I do remove it, the while process is repeated.