My previous post was a bit misleading, so let me clarify something here.
You already have an existing system that has been under operational conditions.
In your case the separate component percentage chart does not come into play.
It only applies when the entire a/c system is replaced as a whole.
You need the full 250cc of PAG oil in the compressor. As soon as the system is cycled for the first time after re-assembly the PAG oil will get distributed throughout the whole system.
I'll put my reputation in this forum on the line about this.
You can be right and I can be wrong.
What I have previously been learned is when you are replacing individual components like the compressor, you still have a lot of oil in different parts of the system, not everything is dumped back to the compressor.
So if you fill your compressor to max (factory spec max) with oil without flushing all other oil out you will probably risk having to much oil in the system.
I don't think my vacuum pump will remove the oil that's left in other ac components. But it's a different story if you totally flush or totally replace every part of the AC system, that's my understanding.
So when replacing individual parts it's a guessing game how much oil you have left, but the Bentley manual gives you a rough idea of how much is left.
I should have said this earlier, but it's a -04 B5.5 1.8t.
And if I'm wrong, that's OK then I have learned something new.