Cake:

1 box butter cake mix
4 eggs
1/2 c wesson oil
1 c mandarin oranges

Mix and beat well. Pour in 3 greased round cake pans.

Bake at 350°F for 25 minutes.

Icing:

1 large can crushed pineapple
1 box instant vanilla pudding
1 large (12 oz) cool whip

Mix together and chill for 2 hours.