You were very close with that presumption NC 50anny! I used Zaino for many years on various cars. I guess I tried most of them over time, Johnson's Kit wax, Liquid Glass, Zaino, Black Magic Body Wet, Pinnacle Soveran, etc. But recently tried this Turtle Wax liquid and I was blown away with it's luster. I actually did the trunk lid first, in four equally sized sections from left to right. I used Zaino, Soveran, Black Magic and Ultra Gloss. The Ultra Gloss wasn't just marginally better, on the Millennium Yellow, at least, it was deeper, richer and glossier by far. I then went over the whole lid and the balance of the car and it shines like a new penny. I was really impressed. :cool