Now I can see a clear improvement, there is much less oil in the oil inlet - previously, the purges poured out of the outlet, and now, after unplugging, it is only damp when touched with a finger. With two injections, I still collect oil, but less, and it looks like a blowout from the intake manifold gaskets. When I do it, I will try to check how much oil has accumulated in the intercooler and pour it out if necessary.
The engine does not take any oil at all, the turbo has no noticeable play.
As a preventive measure, I had the turbo oil line dismantled and cleaned, but it turned out that the strainer was clean.