Like Peter said...........use different weights for different temps.

You might want to check the oil pressure during different rpms of the warm
engine.
Do you have any head gasket problems or leakage?

Your engine IIRC has two oil pressure devices on it, one being a switch and
the other being a combo pressure sending unit and switch.  Been too long
since I have worked on a Scirocco!  lol
Either or both devices could be faulty.  The one I would check is probably
on the oil filter housing or should be cheap to change.
You could also have a faulty low oil pressure warning module around the
speedo.

I insist on using good quality oil filters like MANN or MAHLE and good
brands of oil.  What are you using and did you just change it?

later,
dave
(One out of many daves)

I'm getting oil warnings on one of my '87 16V Scirocco's.  The oil is full.
I've checked it on level ground and dead cold.  The warnings usually come
around 2000 RPM, generally when in gear but occasionally when the car is just
rolling along with the clutch disengaged.  This Scirocco has 117K miles on it
and is filled with 10W40.

I have another '87 16V Scirocco with 225K on it filled with 20W50.  I put 20W50
in this one to cut down on it's burning oil.  It only gives warnings when the
oil is at least a quart low and I corner hard.  I think I recall it giving more
frequent alarms when it was full of 10W40, but I may be remembering another
car, and I've run it on 20W50 for so long I'm not sure anyway.

What weight oil is supposed to be in these cars?

   - Bill