I general, I tend to use products (oils included) for the purpose they were intended. Gun Oil for guns, Tool Oil for tools, Mobil 1 for cars, Olive Oil for salads, etc. Since I'm not a Chemist I choose to err on the side of caution. Some guys use Tranny fluid, Acetone, Mineral Spirts, mixtures and potions, etc. but I don't know what the chemical make up differential is and choose not to possibly find out the hard way.
Since I'm not operating a Range or shooting school where I'd have to go through gallons of the stuff, a 4 -12 ounce bottle or can of Gun Oil lasts me a good while and so I'm not all that concerned about the cost. Spending a few bucks on a bottle of gun oil every year or so won't break the bank.