Crank scrapers or plate...?

I getting the idea that this is all due to the weight of the oil added to the crank, essentially making the crank heavier, and taking energy away from the crank output as you try it spin it up. Is this the right way to look at it?

If so, then the energy absorbed by spinning up the same added weight will be 2.5 times greater going from 7000 to 8000 RPM than going from 2500 RPM to 3500 RPM. So, this is going to be more at more critical at the high RPM's uses in particular, like the NASCAR engine referred to above.

It does not seem to be all that beneficial in low RPM gas pickup truck engine, and for a 350 HP street only engine, running 2000-5000 RPM all the time, it seems like the benefit is marginal enough to make it an optional item.

Good ole' Cale... LOL