Hummm.... I have given thought to a cache for guns numerous times, even have the casings ready... but I never thought about drowning the gun in oil (or other stuff), perhaps a few rags doused with oil, but that would be one heavy casing to haul into the woods. Plus it would have to not have any parts (wood ??) that would absorb oil.
Must research more.
It is a reality for me - and was a necessity.When you walk off into deep woods a lot, it is a reasonably intuitive idea to cache emergency supplies closer to where you might be getting into trouble - If it is a 50 mile walk to get out, but there is a cabin or a cache within 20 miles, well, that math does itself.
So I have maintained 3 caches for a very long time, and was working on a 4th when my legs went out from under me.
To me, motor oil might be handy, but not as handy as kerosene, which makes heat and light - And my last nod, to diesel, because of diesel heaters... And diesel will still burn in a kerosene lamp... So mobedda heat, and lessbedda light.
I was also changing out the firearms - I went from 7mm mag to 300win mag in preference, and win 30/30 to 45/70 - So there is a difference in what is cached now, though I still have Colt .45 revolvers up there, even though I am 45acp nowadays...
Anyhow, heat means a whole lot more to me than it does to you, so I would reckon the decision is a moot point. But two ofthose caches have an el cheapo chinese diesel heater included - and it only made sense to use the fuel for packing.
I would also say the diesel preserves better - Wherever diesel even seeps or weeps on things, it will not rust. Will not. That is not the case with oil - though it is good enough, I would suppose. Tranny fluid might be better.
