I found a little info.......

Petroleum Oil:

"Normal"

Over 100 years of real life experience with internal combustion engines it was found that the "ideal" motor oil viscosity is equivalent to SAE 30 oil at normal operating temperatures and normal operating speeds. This oil viscosity prevents metal-to-metal contact by establishing a complete and unbroken film of oil on all critical surfaces at oil temperature ranging from 190

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2007 CBR 600RR Two bros. C/F slip on--Dynojet usb P/C--Custom mapped--Vortex sprocket -1 front+2 rear--DID X-ring chain--hh pads --Pilot power rubber--competition werkes F/E. Oem blue solo seat cowl and no rear bitch pegs!