Yup, and notice how the primary source doesn't mention the steel tanks of Syrup? Because it's not universally true. I worked at two McDonald's in high school an

Yup, and notice how the primary source doesn't mention the steel tanks of Syrup? Because it's not universally true. I worked at two McDonald's in high school and I changed the syrup many times... it was in plastic bags. It was like a bag of wine, there is a small connector on the bag where it feeds into the syrup distribution system.