[Sirrotica]

Oil can't be compressed, aerated oil isn't oil, or a fluid, it's foam and the gas in it can be compressed.

Fluid carries heat much better than foam does so aerated oil will let bearing surfaces heat up from lack of lubrication, as well as fail in removing heat from the area where friction is being concentrated due to gas being whipped into the oil.

Certain oils and additive packages release the gas more rapidly than others, so they can make the aerated oil act more like a fluid than a foam, Putting faith in the oil to band aid a mechanical problem in the oiling system is a risky move. As the additive package ages, the ability to release the gases slows down making the bearing surfaces more susceptible to foaming.

The oil and system are the lifeblood of your engine, all the forged, and billet parts are worthless without an efficient oiling system.

These are the things I consider when designing the oiling system in an engine I'm building......YMMV