My light gun oil of choice has been BC Sheath. I have yet to encounter a single problem with any firearm I owned when using Sheath (which includes CF's, SG's and ML's).However my firearms aren't suspect to high humidity changes when in storage. For guns that see long term storage with limited play time I have been using inhibitor V80 for some years, equally no problems.

Side note;I also like the smell of BC Sheath.