6 Interesting Secrets Of Popular Fast Food Chains

2. Why are the McFlurry machines always broken?

You're craving a fresh McFlurry from McDonald's. But what are the chances the McFlurry machine is actually working? The Wall Street Journal investigated the mysterious case of McDonald's malfunctioning McFlurry machines. Turns out, the machines probably aren't broken, but rather are in a long, laborious process of being cleaned. The soft-serve machines take up to four hours to clean, a task that needs to be done daily.