Gramma's Whole Wheat Bread

This recipe will make 5 loaves in a Bosch mixer.
5 c. warm water
3tbsp. yeast
1/2c. brown sugar
1 tbsp. salt
1/3c. oil
3tbsp. dough enhancer(you can get it at the preparedness store)
5c. whole wheat flour
7-9c. white flour
~Put warm water in Bosch bowl. Add brown sugar and yeast. Let ferment. Add salt, oil, and dough enhancer; mix. Add whole wheat flour and mix about 5 minutes. Add white flour a little at a time.
~Let dough rise in greased pans. Bake 35 minutes @ 350 or until done.