Bean oil? Like in Soybean oil? Vegetable oil? Are they nuts? I have never heard of this being used to preserve a piece of mechanical equipment, short of a black powder weapon.
If they'd have used transmission fluid, all you'd have to do is put fresh oil and fire the sucker up.
The writing oozes with arrogance. I would not give that seller a penny of my hard earned, even if it meant pushing my 356.
G