Zucchini Cake -Sally

1/2 cup butter or margarine
1/2 cup oil
1 3/4 cups sugar
1 tsp. vanilla
2 eggs
1/2 cup sour milk
2 cups grated zucchini
2 1/2 cups flour
1/2 tsp. baking powder
1/2 tsp. cinnamon
1/2 tsp. nutmeg
1/2 tsp. cloves
1 tsp. baking soda
4 Tbsp. cocoa

Cream together first five ingredients. Add in remaining ingredients; mix thoroughly. Pour batter into pan, then sprinkle with chocolate chips. Bake at 325° for 45 minutes.