>>493822A flashlight about a month ago. I use cheap silicone grease. It's not the threads that need lubricating, but the seals. No petroleum oil based lubricant should be used as it may destroy rubber seals. If you have any silicone grease for airgun seals, that will be safe to use.
If a knife needs lubricating, it's either dirty, the hinge screw is too tight or the knife doesn't have self lubricating washers. I've put some bike chain oil to my SAK's.
>>493837A little maintenance prevents flashlight seals from wearing out and keeps it waterproof. The way I see it, being in the middle of nowhere, in the dark, in a rain, with a non-working flashlight is something I don't wish to experience. And thats fine, you can call me a nerd.
