I have read and read and read. Quick question, can I use krytox 50/50 on all my lights? I have a Mcgizmo PD and read krytox was about the best thing to use for it. I also have a Surefire A2 and read Nygel 760 was the best thing to use for Surefires.I don't want to buy a different lube for every light, but if I have to I will. I was hoping I could buy one to take care of both the threads and O rings on each light. I know it's been asked a thousand time. Any help would be great.