It is my 81 240
After a drive that got the temp. up to 82*, I shut off the car, ran a quick errand of 1 minute and returned to the car.
When I switched back on, the temp was up near 100.
As soon as I got moving ther temp returned to 82.
Is this a normal situation?
For the past year, after a rad change, new hoses, tstat and coolant, the car would run near 90 and quickly rise to 100 when climbing or hard running for a while.
Forum members opined trapped air as a possible reason.
I have done no cooling system work since last years work so if it was trapped air, it was not purged by me.
Last month, I finally bled my slave cyl, after over a year of soft pedal and grindy reverse and got my clutch back and simultaneously my 90-100* running was gone replaced by the current 82*.
Is this just coincidence or was the unbled slave causing clutch slippage and thus overheating under load?
What say youse?

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1981 240D 143k 4 spd manual -SOLD

2004 VW Jetta TDI 5 speed 300k -still driven daily