Whats a substitue for vegetable oil in browni mix?

Well, I have a Betty Crocker brownie mix: Dark Chocolatr Premium Brownie Mix with Hersheys dark chocolate syrup in a pouch. And the extra ingrediants required are 3 tablespoons of water, 1/3 cups of vegetable oil and 1 egg. I have the water and the egg, but no vegetable oil!!! Can someone PLEASE help me????? Thanks :) :) :) :) :) :) :) :)