May 16, 2011 No Comments Free 20 oz. Diet Dr. Pepper at QuickChek Print out the coupon and redeem for a FREE 20 oz. Diet Dr. Pepper at QuickChek. Coupon expires 5/23/11. Locations. Free 20 oz. Diet Dr. Pepper at QuickChek – EXPIRED Facebook Twitter Love Freebies and deals? Follow us on Facebook, X, Pinterest and Instagram for around the clock freebies updates, reminders and more! You could also subscribe to blog via email to have the latest updates sent directly to you in your inbox. Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.