I sent for a free sample of Tide CW when it first came out. I was impressed and bought the powdered version, which seemed to do a better job.
I washed in temp-controlled cold water (whites included) exclusively for almost 6 months. When combined with liquid chlorine bleach, Tide CW did an excellent job on my kitchen whites. In fact, some stains which tended to be 'set' using hot water came out much better in cold.
But then I started to get into the Mexican detergents and now the spectacular SA8, so Tide CW is no longer my daily driver.
I bought up the last 4 big boxes of it from WalMart a few months ago. I'm not finding the powder anywhere, anymore. And the liquid version isn't as good, so I'm not interested. And since I'm not using the CW all the time these days, my stash should last a long, long time.
One nice side effect of using cold water was that most fabrics---again, especially my oft-laundered kitchen flour sack towels, etc., seemed to last longer. Colored shirts, etc., did too.