Assuming the sump oil temperature on the Pro-Stock cars is at 80C (176F) when they launch down the track, which is probably being generous, then 0W-8 at 80C is the same viscosity as shown below. When looking at viscosity, this is why 0W-8 is used and works for 1/4 mile racing. I'm betting the sump temperature is actually lower than 80C when they launch, probably closer to 50-60C (122-140F) ... call it 55C (131F). Y-axis is viscosity in cSt.
Equal Viscosity Temperatures
0W-8 @ 80C (176F)
0W-16 @ 90C (194F)
0W-20 @ 98C (208F)
5W-30 @ 109C (228F)
View attachment 70444
Equal Viscosity Temperatures
0W-8 @ 55C (131F)
0W-16 @ 63C (145F)
0W-20 @ 70C (158F)
5W-30 @ 79C (174F)
View attachment 70449