Oil Temperature Query

[amusingduck]

I was given a Golf TDI hire car recently, and one of the features on the MFD was an Oil Temp Display.

Now, my car has no indication of Oil Temp, and as I know that Oil takes longer to reach operating temp than coolant; I assumed that once you'd reached operating temperature it would stay there.

Not so. In the golf, I reached around 90C max around town, and 110C max on the motorway. Idling in traffic brings the temperature down to 70-80C.

To be honest, I was surprised how quickly the oil gained and lost heat. Why is this? Does this happen on all cars, or is there something different about the golf (modern, diesel?) that makes it this way?

[ExPat2B]

Nope nothing wrong business as usual. As a side note, your coolant doesnt get to operating temp and stay there either, it constantly varies, its just that they fit an idiot gauge with no movement on the needle between certain values.