Ok so i parked the car on my driveway (already inclined) and on ramps (even more inclined) to fill the coolant system from the front of the motor. I used the top radiator hose, filled it up, put it back on, then ran it and burped any remaining air out of the system (squeezing top radiator hose till all the air finished coming out of the expansion tank). Unfortunately it made no difference in the running temperature, so at this point i'm thinking that the sensor or gauge is the culprit. Only way to find out is to use an IR thermometer i guess, so that is my next step.

__________________
1985 300SD "Battleship"