Had a friend who once brought me a very nice Browning Auto 5, saying it didn't shoot a ?$%%/&* even if he had oiled it to death... I just had to take a sniff to understand: some funny dealer had sold him Tru-Oil for gun oil! Had to completely dismantle that shotgun to clean the varnish inside!Jack Monteith said:I'm more than a little rusty on petroleum science, but grease is oil and a soap thickener. I'm not saying that you can mix your favourite gun or motor oil and a bar of Ivory and get a usable grease.
Keep the linseed oil out of the lockwork, or old Betsy will be seized solid. Oil based paints are mostly linseed oil and pigment. As a retired flaxseed grower I can tell you a few horror stories about it.
The Virginian said:Dextron II and Dextron III Automatic Transmission fluid is a decent cheap substitute for Sperm Whale Oil. In fact, early automatic transmission fluid was sperm whale oil based before WWII.