In mixing bowl blend the shortening, oil, vanilla and sugar until fluffy. Add eggs and buttermilk and beat until smooth. Mix flour with baking soda, cocoa, baking powder and salt, add half of flour mixture to shortening, egg mixture, and beat. Scrape bowl time to time to clean the sides off so ingredients are blended in batter. Add cooled coca cola mixture and beat. Add remainder of flour and beat until completely smooth about 3 - 4 minutes. Batter will be thick.
Place batter into a 13" x 9" x " 2 oiled and floured baking pan. Set pan on top shelf in a preheated 350 degrees oven for 35 - 40 minutes. Check for completed baking time with a toothpick. If the toothpick comes out clean by sticking in the middle of the cake it is time to come out of the oven and cool.
For Frosting: Cream butter, add cocoa, vanilla, Hershey's Syrup, and coca cola, beat until smooth. Add powder sugar a little at a time and beat constantly
at 6:49 PM on Dec. 11, 2010