Lithium especially the type used on car hinges and locks will if used in concert with WD will harden up and cause the problems you stated.
No problem for me, I don't use WD-40 on guns, or did you not catch that?
I'll bet I'm not wrong about you not being a gunsmith. And I'll also bet the other gunsmiths on this board don't use WD-40, either.
And you gave the answer or part of it in your own anecdotal comment.
Working on many guns over many years is hardly anecdotal. It's not a double-blind university-sponsored study, but far from anecdotal.
I had a ARE topper on my truck and the installer unbeknownst to me used Lithium grease. I then used WD as I have in all my locks on cars and trucks over the years. Over time about two months the lithium reacted with the WD and turned into an almost clay like substance. I had to disassemble the lock and deep clean it to get it working again. So it was a lesson in not mixing different based lubes.
This is an anecdote. Unless you've done it a thousand times, like I have cleaning up WD-40 gummed-up guns.
You use a derogatory statement to complain about derogatory statements. LOL Hmmmm. If anyone has a hair you know where it sounds like you do. If you had something relevant to say about your experience with lube I may be interested. But to just gripe not really interested and easily dismissed.
And yet I come along and relate my extensive personal experience, and you poo-poo it as anecdotal.
Then state I am just wrong. Wrong about what specifically?
lso on black powder nothing solvent based works. The only thing that works well is to draw a tub of hot water with dawn or some grease solvent soap. Clean the gun is as hot of water as you can and as it heats the metal and you remove it from the water the metal evaporates the water. Then put your oil of choice on the metal. I had several black powder guns for many years I shot and they looked like the day I bought them.
You are wrong here, however. Yes, hot water and Dawn works great, in that you are correct. However, it is not the
only method of cleaning BP guns, and most gunsmiths I know myself included, will use T/C #13 to clean BP guns, it's a lot faster, less messy, and works very well. I use it on my own BP guns, too, sometimes.