I might be stating the obvious here but you are bleeding the air out of your oil bottles right?
Bob remember the old bug juice in the green bottle with the black screw off cap? Well that shit was on the shaving kit packing list and it was always leaking because the cap would loosen and the bug juice would eat/melt my whole kit.
Anyway, during a layout one day when my whole kit was destroyed my Team Leader told me that if I removed the cap and squeezed the bottle until the liquid was about to squirt out then screwed the lid on while maintaining that pressure on the bottle, that it would create a suction in the bottle that would prevent the cap from unscrewing itself. Conversely if there was air in the bottle as pressures change due to flying or whatever the air would expand which increases the chances of the lid loosening and leaking your shit everywhere.
I have applied this to my weapons lube over the years and I have no issues with CLP, Slip, LSA, etc. etc.