Hi all, had a service a couple of weeks ago & have noticed a larger than normal oil temp variation on a casual drive down the freeway. Normal variation would be 100 degrees +/- 2 degrees, but yesterday evening noticed 100 degrees +/- 6 degrees! This is sitting on 110 on the freeway, the temp would rise to 106 up a hill & drop to 94 down the other side.

The service centre used the same oil as last time (supposedly), the approved Fuchs product. Would this be a characteristic of brand new oil? Haven't noticed this before...