Its basically STP... an oil additive. I am unfamiliar with the brand so i couldnt say how good it is..
Ages ago, when gas was 14 cents a gallon... oil was oil and gas was gas (period).
People started adding stuff (STUFF) being everything we take for granted today. Like multi weight high temp detergent etc etc.
Sometimes people think their oil or fuel needs more stuff, and you can buy more stuff... most isnt snake oil. The stuff really does work. Caveat: stuff is often a little goes a long way and afterwards returns diminish or make things worse.
Example. 1 can of stuff to 7 qts oil are fine.
12 cans to a half quart of oil... boom. Well boom or call it full synthetic and charge triple for it. 😁
I worked for a place that did custom oil and fuel blending for a while. They had giant steam heated vats for heating the oil prior to adding stuff.
They would blend and ship in tank trucks or package qts or gallons and private label. Box truck ship.
They were in business over a 100 years. Could longer compete with big box corp stuff.