Your right!
As displacement doubles.. surface area (the part that needs to be oiled) only doubles!!
(this changes greatly with the borexstroke configuration)
So you pretty much have a lot more oil/fuel coming in to cool/smooth a smaller surface.
Also the .21s should (but not really) develop more torque thereby reducing the number of RPMs required to develop power.
Why is a diesel so great? Cuz it develops max torque at like 2200 RPM and less RPM=less fuel consumption!
Great isnt it!!
ram