Can you substitute apple sauce for oil butter or margarine in a recipe?

It's might be better to substitute oils, butter and margarine with applesauce in oil-based baked goods like muffins and breads, or moist cakes. Substitute applesauce one for one with the oil, and it helps to add in 2 tablespoons vegetable oil. They say a little oil goes a long way in contributing to a better taste and texture. I've done this a few times with a zucchini bread recipe that calls for 1/2 cup of oil. I use 1/4 cup oil and 1/4 cup applesauce and the bread tastes great.