Umm linseed oil is an oxidizing oil and therefore not a good choice (Edit: for anywhere lube is needed, it works great as rustproofing on bridges/machinery castings/anything that doesn’t move) since as you’ve found, it will ALWAYS harden… I think the boiling (chemical additive these days 99% of the time) just makes it harden faster/at colder temps?
Ballistol Universal Oil is German or Austrian I think and works great in place of 3 in 1 and many more spots. Thousand and 1 uses, also great for sewing machine oil.
Although it can be tricky to find everywhere, most sporting goods shops with a hunting section will have it, or Canadian Tire does. Comes in spray or liquid. Ask your local hardware store to start carrying it!











NobaraOS has a preconfigured Davinci Resolve installer in their welcome app fwiw