I think it won't work. I maybe wrong. Is it from scratch or box?? there are ways to substitude fo the oil. But need to know what you are starting with.
You can sub melted butter/margarine for the oil or applesauce. What do you have on hand???
I know you can sub applesauce:
http://busycooks.about.com/library/print02/napplecake.htm
http://www.ochef.com/baking_substitutions.htm
You could also try using mayo or sour cream for the oil.
Do you have any margarine or butter, melted would work.
Or diet soda. Then you don't need the oil or eggs
Or diet soda. Then you don't need the oil or eggs
I made a white cake this way with seven up. The kid I made it for loved it. Still puffed up just as good even without the eggs because of the carbonation, I believe.
Margarine is pretty much oil with butter flavoring and maybe a few other things we really don't want to know about! I sub margarine for oil alot because of the "extra" taste, your cake should turn out just fine! 
I just stumbled on that recipe tonight. I remember we use to make cola cake all the time when I was younger. I haven't made it in years. But I am going to have to try it with the diet. It says it is ok for diabetics. I thought I would make one for my grandma. We also use to make mayo cake. Both were from scratch but the recipe I found you doctor tthe cake mix.
I make coca-cola cake quite often...my recipe calls for 4 eggs and lots of sugar. Does anyone have the recipe that doesn't call for the sugar???? Please post it! How awesome!
Wait just a minute! How does this soda substitution thing work? Say I grab a box of DH. What do I add? What do I replace? Will it work for all flavors, because they have different additions???
I took a box of white BC cake mix and poured a (can 12oz) of seven-up and mixed for the amount of time printed on the box. I didn't add anything else to it. When you pour the soda into the mix it will foam up lots, so make sure you use a big enough bowl.
For icing, I made a glaze of powdered sugar and seven-up.
As long as you think the flavor combination will be good, you can use whatever you like. The soda doesn't provide an abundance of flavor, just a little something that makes you question what its made of. I think I might try a chocolate cake with cherry-coke or cherry-pepsi, just for fun. Mountain Dew might be good with a lemon cake.
Clarification:
These are TWO seperate cakes. When making a normal cake I always sub out equal amounts applesauce for the oil that is called for. So, if recipe calls for 1/2 cup oil, I use 1/2 cup unsweetened applesauce. Don't want to add any more sugar than is really necessary. 
Gotta cut back on sugar somewhere.
On a completely different cake, instead of oil AND eggs, I will mix in one 12oz can of soda. Thats its, nothing else is added. Cake mix and soda.
I hope this makes sense to everyone. I'm not sure if you were understanding they are two seperate cakes. I've never made with diet soda so I don't know if the "diet" would ruin any part of the cake. I do not believe it would though. [/i]
Sorry I just check my mail kind of late today. The recipe on the site said to just use the cake mix and the soda. No water, oil, or eggs. I am going to try it tomorrow. Because I forgot to get the diet pepsi when I went to Wal-mart today 
I hope all the Yummuy sounding cakes turn out great. I will have to try mountian dew one for DH and the Kids
I am going to try it with either devils food or milk choc.
Quote by @%username% on %date%
%body%