This is what I mean by no-one agrees.

Granted what you say is true. But, according to Wildcat, the only way oil can get to the bearings/crankcase for instance is blow by....so you need more oil to compensate for the fact that there is no direct fuel/oil mix pumping to that region of the motor.

http://www.wildcatfuel.com/fuel_24cycle.html

"First - Four stroke engines require more lubrication than do 2-stroke engines. This is do to the number of moving parts. Unlike a 2-stroke, a 4-stroke does not have the benefit of raw fuel and oil pumping through its crankcase for lubrication. A 4-stroke draws it's fuel in from the top of the cylinder by the down stoke of the piston. Lubrication is accomplished by blow-by at the BDC (bottom dead center) and run-down of oil through the lifter tubes. This oil must migrate to the bearings as well, therefore, volume is essential. (See disassembled 4-stroke -vs- 2-stroke below for comparision). Yes, despite the nonsense that some would try to get you to believe it's that simple."

There is an incredible amount of disagreement in this area