Supermarket stuff, Tesco. Used it in my Peugeot for 9 years almost exclusively,might try a tank of bp or shell but going on holiday anyway. My oil temps are routinely that high, rarely below 98 really, on both legs. That was largely on acc too.
Mrs had the heated seat on all the way there

which didn't help but still. Will see how it goes. Trouble is it does a lot of town miles, so the first leg of a long journey will instantaneously deliver a dpf regen. It did better than that before when I went to Peterborough. Wouldn't mind but that's driving it like a saint mostly, caned it once briefly on the way home.
We'll see, if this sh!t continues I can't see me bonding with it well, May as well have bought a 6 R if this continues. It's failing to better that which it replaced so far.