Sourdough Coffee Cake

Ingredients

2 cups Herman Sourdough Starter
2/3 cup vegetable oil
2 eggs
2 cups all-purpose flour
1 1/2 teaspoons ground cinnamon
1/2 teaspoon baking soda
2 teaspoons baking powder
1/2 teaspoon salt
1 cup white sugar
1 cup chopped pecans
1 cup raisins
1 cup packed brown sugar
3 tablespoons all-purpose flour
1 teaspoon ground cinnamon
1/4 cup margarine, softened
1/2 cup margarine
1/4 cup milk
1 cup packed brown sugar