oil pressure guage reading

[Konstantin Bogach]

Hi list.

I held myself for a long time not letting this question go to the list
but... I don't have any other anwering source.
I use  Amsoil full syntetic10W-30 oil in my 200tq. It is recommended by
Amsoil for street driven gasoline turbo engines. And, I think I've read
that dealerhsips also use 10W-30 oils (maybe not syntetic).   I see on
the hot engine:
1 bar at idle
2.2 bar at 2000 rpm
2.9 bar at 3000 rpm
3.1 at 4000rpm

Isn't it low?  If it is low what is most probable problem?
All other gauges show reasonable figures so think that voltage regulator
is ok.

Konstantin Bogach.