someone recently posted ( last month or 2 ) about having crank scrapers in production, perhaps in the states though.

i think the primary benefit is the small increase in power by removing excess oil from the crank and getting it back to the pump, so it's not going to do anything magic, and there are other ways to keep the oil pump fed, but it will help hot engines a little.

an oil cooler would probably do more good in the long run.