Despite refusing to do so earlier in the week, circumstances forced my hand (in the rain) towards the back end of the week and I used an explorer ticket to/from Teesside a few times.

A couple of points to note: Despite leaving Durham or Chester on time and also arriving on Teesside as scheduled, drivers were having to push the Pulsars all the way, to keep to to the timetable.
It was the same returning home.
The heat pouring out of the back end of the vehicles, made the trip quite uncomfortable too.

Ended up on a Sxxx ONL Daf appearing on a 21a after missing an x7/x9 home one afternoon too.
Again, pushed to the limit for the journey north, but managed to make up time.
Despite the rattles, shakes etc the engine didn't seem as hot as the Pulsars did and it seemed ok on the country lanes around the Trimdons too.

Not sure how common it is, or the reason behind it - but the newer vehicles (not just ANE Pulsars), all seem to flood the lower saloon with heat. Noticed it on a few of the Geminis on the GNE 56 too. At times, they can be like an old school Atlantean temperature wise!