Today. advertisers stress high tech. In the late 1920s or early 1930s this product was developed ..Wikipedia notes " It is claimed without evidence to be beneficial for engines... " A few decades ago a bit of "mystery" was enough to sell your product. This product line is still available, so maybe it does have benefits, but I would be reluctant to pour something called a "mystery" into my new BMW (if I had a new BMW).
Welcome to all. I began blogging Retained-Images in 2004 at My-Expressions.com. It is gone now.