Engine break in oil?

i used it to break in a 292 mopar cam. Worked great! Does its job well!!
I have been doing some research on engine break in additives. And I come across this stuff. Its made by lucus which I use in my daily drivers. It says no additional additives needed. Has anyone used it? Do you trust it without adding anything?
Amazon product ASIN B00INXYZH0
View attachment 1715310350