Tallow and oil did not mix; beeswax helped.

[Wepster]

Not really on topic, but related is a very distant way..... Watching a "Have Gun Will Travel" rerun.. one of the characters in the episode stated his occupation as a "tallow and leather buyer" (his family owned a tannery in New York).

[dikman]

I've only ever used tallow in combination with beeswax, it never occurred to me to try it just with some sort of oil so I have no idea if it would work. Maybe it will work with some oils and not others?