I've not seen this product before. With a quick Google search it appears to be a European item (I didn't see any offered directly in the US). The description is as follows:
Properties:
Forms a highly active nanobarrier in the lubrication system, which, when nanoparticles are distributed, provides a minimum coefficient of friction. Maintains all seals in good working order, including O-rings and Simmerring radial shaft seals.
- Highly active antifriction protection,
- Instant lubrication during cold engine start,
- Smooth and quiet operation of the engine,
- Increased engine power,
- Long engine life,
- Maximum EP in emergency lubrication mode.
Applications:
The product is compatible with all oils.
Directions for use:
Add after every oil change. Before use, it is recommended to flush the oil system with
ENGINE FLUSH.
Consumption:
375 ml is enough for 5 liters of oil. For gearboxes and differentials, dose at a ratio of 1:10.
Action Time:
Valid during vehicle operation
It sounds very similar to a couple of other products that have been popular here for many years. Some people swear by them.
I attend several automotive trade shows every year and there are always lots of demonstrations for things like this. To be perfectly honest I'm not a fan of any "magic in a can", but that's only my personal opinion. Adding anything to the oil is a bit tricky, as modern oils have a very complex blend of additives already engineered into them. So I'd wonder exactly what the chemistry would be by throwing something else into the mix. However I have no experience with this particular product, but I'm sure others have found it to be a benefit to them.