Blown corn stillage oils and methods for making blown corn stillage oils are disclosed. The split double option may be either in lieu of, or in addition to, a standard double down option. In accordance with one preferred embodiment, the separator is a dialysis bag contained in the transparent reactor vessel into which the resin is placed. A cleaning liquid distributor is positioned above the rotor and is rotatable together with the rotor for distributing even amount of cleaning liquid to the plurality of test tubes.