This is a question that you should ask your diesel manufacturer, not members of this forum. The manufacturer should represent a pretty unbiased source of information on the subject. I doubt if anyone here has conducted scientific tests to see if this stuff is anything other than snake oil.
If you ask people on this, and other forms they will tell you it is cheap insurance, but it really isn't cheap on a per gallon basis. How do they know it is insurance? Well they believe it on faith. It looks like most people use it, so I should too. I guess I have bought into that logic. Certainly the additive sales information says that, but is it true? Have we all been duped by the snake oil salesmen?
I also use it in my tractor, but I never used it with my diesel car and truck which I got rid of 20 years ago, and they went a long way and never suffered engine failures.