Todd, Autumn, and those interested,
FWIW - All my calculations, estimates, and comments were based on the kinematic viscosity of hot (190F-200F) 30W oil. The leakage flow with lower kinematic viscosity would be higher numbers.
Being an oil patch brat, I have rather strong opinions against using 0W lubrication in engines as I was taught to err on the side of reliability. And I fully realize your experiences may vary, but you can't win if you don't finish.
Regards,
HB2
Dissident