Orange Cooler Cake

Preheat oven to 350 °F (175°C). In a mixer bowl, combine white cake mix, 1 1/3 cups orange juice, eggs, shortening, grated lemon peel, and grated orange peel. Beat with an electric mixer on medium speed for 2 minutes. Pour the batter into a greased and floured 10-inch fluted cake pan. Bake for 45 to 55 minutes. Immediately remove from the pan and cool on a wire rack. Meanwhile, in a saucepan, combine 2 tablespoons lemon juice, 2 tablespoons orange juice, and sugar. Bring to a boil and simmer for 3 minutes. Drizzle the warm syrup over the cake.