>>>*The real magic of oil is that it doesn't want to move.

To even get it to move at all, we have to keep it under pressure.

*Since it doesn't want to move, the molecules, being very slippery because they roll, stay where they are forced to be very well, and they also resist crushing force.

This means a soft piece of metal (bearing) can slide up and over a hard piece of metal (Crankshaft) and never touch, even though the oil film thickness may be measured in the millionths of an inch.

When an engine is running, the oil gets whipped, the sump is full of air. 90% air, about 10% oil.

This is enough. It doesn't take a lot of oil to get the job done. But when the situation becomes no oil, failure is in seconds.

There is a post regards inclines, etc. No problem for folks running dual transfer cases, RPM is up a bit, oil fills with air, the pickup is covered.

It isn't the speed that gets you, it is idling, air bubbles burst, oil settles in the sump, the pickup will draw air first if it can.

Bearings can heat up and score in a very short time....*EB