Did you guys read that pdf at the link that Quattro Pete posted? It's a excellent description of the motorcycle specs. It doesn't precisely describe how they test for static and dynamic friction but otherwise it's all layed out.
Oils must be of these quality levels:
API SG, SH, SJ, SL, SM(excluding SM/EC), SN(excluding SN/RC)
ILSAC GF-1, GF-2, GF-3
ACEA A1/B1, A3/B3, A3/B4, A5/B5, C2,C3,C4
and be of these physiochemical properties:
Sulfated ash 1.2% max
Phosphorus content between .08% and .12% max
evap. loss 20% max
HT/HS 2.9 min
and, they're allowed to shear out of grade to the following kinematic viscosities:
XW-30 can go down to 9cSt
XW-40 can go down to 12cSt
XW-50 can go down to 15cSt
all other grades must stay in grade
And of course there are definitions for the frictional characteristics of the oils. MA2 offers the highest level of friction. MB offers the lowest level and not recommended for wet clutches. MA1 is the low friction side of the MA spec.
Very fascinating reading.