Yesterday - 2003 KLR650 with 4,800 miles. Switched oil out from Kendall "thumper oil" to Castrol Syntec 20w50 "muscle car" synthetic oil. KLR's shear the heck out of oil from what I've read on the KLR650.net website and this oil is well though of for these bikes. I guess the high amounts of shearing are due to oil going through the clutch, transmission, ball bearings, roller bearings.
Changed oil filter to one made in UK that's supposed to be pretty good: "Hi Flo Filtro" Sounds hokey to me, but supposed to be good.
And yup, it took 2.5 liters of oil right on the money.
The "doohickey" in this bike has already been updated. These get spring adjusted at every oil change, so I pulled the rubber plug and did that, too.
This was the first OCI I've done on the bike. Printed the torques off the KLR650 site and used an inch pounds torque wrench on everything.
The job was a little messy. Live and learn - I'll do better next time.
Larry S.
10*Bears