Greases biggest problems (not being a liquid) is that they keep dust and sand in the mechanism, liquids allow that foreign matter to move away from bearing or locking surfaces.
TW-25B or FrogLube are prime examples of great lubes that go to hell when sand is involved.
No worries... Super Lube make oil based lube too. Here is some tests on Firearms Lube RE:AR15.com http://www.ar15.com/forums/t_3_7/58...land_CLP_vs__Mpro_7_LPX___Corrosion_Test.html


















































