Thanks for the reply,
comparing the numbers it seems as it should be the same sensor as used in newer dohc family equipped cars as dedra, thema, alfa 155 etc. I am guessing the sensor apart of a special sealing should not differ from water temp sensors having 14x1,5 thread and with the NTC characteristics.
My oil temerature gauge goes just a bit when the engine is warmed, but when I short-circuit the wire, the dial goes to the maximum. Hence I suspect the sensor, however at 20C the sensor has resistance about 4kOhm and decreases with the temperature rise. But the lowest resistance is to high, I recon it should be close to zero...