Oil Leaks

Has anyone used an oil additive such as White Shepard Oil Stop Leak to stop small oil leaks?

Where Is The Sheep Leaking Or Is This The Volvo That’s Leaking? Seriously, Do You Have Any Idea Of The Leaks’ locations?
CSA

If the additive plugs the leak, how do you know it’s not also plugging up some small but critical oil passage within the engine?

Do you know where or what the oil is leaking from.

I would be leary of additives in your vehicle given the turbo stays alive with a good flow of coolant and oil.