the Vegetable oil is for you to put on the figures and your hands then make a fist with the trooper in hand and the Jet Trooper flies(squirts) out of your hand.So I finally got my order of Black Series Carbonized First Order Jet Troopers... I ordered 3 of them... They came in a large box with a gallon of great value Vegetable Oil... why??? I didn't order any Vegetable Oil!!!