I'm sorry to say can't spot any beneficial effects of the Tungstensulfide in the engine oil.
(1 gram / liter)
Hägar doesn't seem to like temperatures of 28°C and above any longer - though I've driven in them with the grillblock on before.
Coolant temperature can go up to 95, with intake temperatures between 40 and 50°C - resulting in rough running, as if the DPF is regenerating.
I've ordered some dimple tape just for fun. With a bit of luck it may even work.
The dimples will go on the mirror housings and the A-frame [the V50 has a lot of windnoise there], the windshield to roof transition, and the rather round rear bumper.