I use a water oil cooler on my car. Works really nice and dropped oil temp 50 degrees.
Plus the oil heats up faster.
Of course your cooling system has to be capable to handle the heat.
Pour point of -56 is impressive for sure but kinda meaningless.
Amsoil 15w40 DME has a pour point of -40. It's CCS at -20 is 4000
HPL has a pour point of -56 but a CCS of 4300 at -20.
So the amsoil flows better even though the pour point is higher.