Tinker - way to go on that bears oil. I've found the oil derived from fat taken from the gut, around the stomach, intestines, etc, is the best 'oil'.
: Most people use too much heat in the rendering process. Too much heat renders too many solids, making more of a shortening than an oil.
: The oil that remains liquid at -12 or so, if poured off, will make the best lube for hunting during the cold winter months.
; I hadn't thought of the oven method - way to go for that titbit of information.