Thanks for the responses.
The headliner and C/V shaft are out. I checked the actual oil pressure against the gage in the car and it is indicating correctly.
I am bothered by the design of the oil pressure indicator however. After running oil pressure readings, and further research into design operating oil pressures for this engine, it would seem that a gage calibrated from 0 - 7 or 8 bar would be much more usefull. Oh well, better that the needle stays on the upper peg instead of the bottom one!
1980 240d 4sp
ASE Master Auto Technician
ASE Advanced Engine Performance