Here is the link to the Dr. Pepper promo page http://www.drpepper.com/promotions/ea/
The 4 universal codes are as follows.
CBEEAAA41NWH
CBEEAAAE4L9N
CBEEAAAFQG9J
CBEEAAAE98ZV
Now, You can use the codes for BC2
You will need to make 4 different Dr.Pepper accounts.
Try using Internet Explorer as trouble has been reported with firefox and chrome.
1. Create a new Dr.Pepper account
2. Enter the Universal Code
3. Right click the claim now button (for the Mass Effect Prize) and click copy link
4. Put link into your browser address bar
5. Change the =4 at the end of the bar to =3. (if it's already a =3 change to =4)
6. Hit enter
7. Claim whatever prize you want
8. Repeat 1-8 until desired amount of prizes.
Any questions let me know and ill help you out.
Thanks