There is a relief valve in the oil pump IIRC, normally they will peg the needle at 3+Bar above ~1500rpm and drop to 1.5Bar-2Bar at idle. If yours is always pegged, likely the oil pressure sensor or wire is suspect, these cars won't peg the gauge hot and idling.

For oil into the intake look at your breather line (from cam-cover). There is a thread here talking about failure of a PCV assembly in the cam-cover sending too much oil spray into this hose. I can't imagine oil pressure blowing turbo seals, unless the relief valve is stuck? Seems it would cause other problems also.

With the vacuum-actuated wastegate in the car I don't believe that you can get away with plugging the EGR (without losing boost), maybe re-directing the breather temporarily would be okay though.

If you have oil in the intake but can't verify it is the entire oil consumption problem, there is also a problem with the head gasket #1 cylinder to oil gallery (forward of #1) failing. There were some changes through the years to correct this but I do not know the years. There was also the "rod bender" reputation of the 3.5s, not sure that the '93-up has this concern and you have checked compression & leakdown, so unlikely you have a bent rod and seriously oval/worn cylinder.

__________________

Gone to the dark side

- Jeff