Each to their own I guess but if its a street car that is only doing the occasional track day then frankly as long as its a reasonable quality semi synth oil can you really drive a car that hard on the road that a 10W-40 or 15W-50 or thereabouts is going to be an issue?
When you do a track day, the 1-2 times a year ALWAYS put a fresh filter and sump of oil in the car. That't my practice. And frankly people saying run a cooler, keep it under 100deg....my experience is your oil temp will run over 100, more like 110-120deg c which is perfectly fine.
Remember that the oil going through/around the cams and lifters is subject to far less shear and temp and only running at half the speed of the crank vsgoing through the mains and big end so you are only measuring the average oil temp on your gauge.
The old wives tail , which seems to hold true on race cars is run the oil over 100deg c so any moisture/condensation, blow by gases etc dont stay entrained. How true that is I dont know...but of course those engines are purpose built and toleranced accordingly
So that is the BS I tell myself and every time I go to the track I always run a genuine Nissan oil filter and Castrol 10W60. I love the viscosity, rape my engine with boost and revs and havent lost a bottom end.
If you find on your aftermarket pressure guage you have 60psi at 7,000rpm with the oil up to temp with XX oil then I would be bumping up viscosity so that you are between 70-80psi