Mandarin Orange Cake
["1 Duncan Hines butter cake mix", "1 can mandarin oranges (juice and all)", "4 eggs", "1/2 c. vegetable oil", "1 pkg. instant vanilla pudding", "1 large can pineapple, crushed and drained", "1 (8 oz.) carton Cool Whip"]
["Note:", "You may use orange or pineapple cake mix."]
["butter", "mandarin oranges", "eggs", "vegetable oil", "instant vanilla pudding", "pineapple"]