A TECHINAL QUESTION ABOUT TODAYS ENGINES
Current NASCAR
Gettimg back to your original question of oil pressure and temps it is probable that engine builders are looking for the lowest possible oil pressure to reduce crank case pressure and increase horsepower and that is why the big boys use a dry sump set up which basically means the engine does not have an internal oil pump which robs hp.
There has been a few meltdowns this year and the engine guys know why. This could be due to the EFI system flooding or leaning out cylinders at high rpm. I recall customer complaimts of rough idle with cpi engines years ago and learned that this was caused because of fuel puddeling at the intake's floor causing a near missfire, whicb was a normal condition.
Of course the rough idle theory does not apply to an engine running at hi revs but fuel is still getting pump through the intake and for sure they are working on it.
For our daily driver it is not a big deal but at the highest level of competion it is. The engines built for Cup racing for instance do not like extended idle as the are built to run at high rpm.
Add a restrictor plate to the mix and it is time for some real homework.