Lorry drivers been doing it for donkeys years.
It's important that the oil is Jaso FB spec compliant, low ash, and not fully synthetic - because this does not burn well.
This 2-stroke/diesel blend apparently brings the following benefits.
1. 2-stoke burns better and more cleanly than diesel. This means more complete combustion of your diesel fuel.
2. Helps to initially clean out the engine internals, and keeps them clean.
3. Restores missing lubricants (and more) from low sulphur diesel.
4. The engine runs much more smoothly and is much quieter.
5. Significant reduction in smoke from exhaust (due to better combustion). Applicable for cars with no DPF
6. Keeps the DPF cleaner.
7. Increases the life of the engine, including injectors, fuel pump, etc.
so may stop your rattley lifters.