I had by heater core (Matrix) changed because of the dreaded Silica Bag blocking the Core so the heater was not working 71,000miles

I then started looking at my engine oil temperatures wondering if the oil cooler might also be blocked?

Water Temp normal and steady at 90C after about 10mins driving.

The oil temp rises much slower which is normal to about 90 to 102 around town with outside temps now in the 5c to 10c range

If i go onto the motorway and drive to the speed limit (ish!!) within 20 to 30 mins its up to 115c to 120c range .

This is with no additional load other than me the driver.

In the summer I drive to France with 4 golf buddies with suit cases and golf clubs in a roof box.

What can I expect ? is this already too high.

Research online does not really give full ranges of oil temps fully loaded driving a speed.

Advise anyone

Is this a TDI or a 2.0 l TSI ?

I have a 2.0TDI in an Octavia estate and my oil temp seldom goes above 90C or so...🤔

1 hour ago, Evolution13 said:

Is this a TDI or a 2.0 l TSI ?

Diesel

Given that you have already replaced a blocked heater matrix, it's certainly possible the coolant circuit in your oil cooler is also compromised. You can only really tell by taking it off to check - at which point you might as well put a replacement on. Will your golfing chums still be your chums after two days of their golf holiday are taken up with fixing your overheating Kodiaq?

120C is a bit hot. 130C would definitely be worth investigating. I'd drive it until the warmer days of spring to see how it copes - then I'd replace the oil cooler.

I have the Superb 150 TDI, so not quite the same, and the oil temp usually hovers around the 95-105 degree range, sometimes up to 108 degrees, can't remember it ever going higher than that whatever the weather/load conditions.

110c is normal. Higher, don't know, haven't kept an eye on this.