Originally Posted by Shannow
Originally Posted by ZeeOSix
Originally Posted by BusyLittleShop
Quote Blackstone Labs on the Importance of Viscosity.
The oil's ability to act like a solid and protect parts is not related to its thickness.
The oil film thickness between parts certainly is dependant on the oil viscosity. It's that oil film thickness that keeps moving parts separated.
Blackstone needs to study up on tribology.
Yep, and epicyclic gear train versus a regular train, pich line speeds, tooth loading, gear length, how many gears share the load (planetary)...and viscosity.
AGMA have some pretty good resources on gear loads, viscosity and life...and viscosity is certainly a factor...
Shannow,
For a bike's transmission, would you need separate EP/AW additives to protect it uniquely that you otherwise wouldn't have in an API SN Passenger car blend?
There is rare if ever a situation where it is appropriate to put a crankcase oil into a manual or automatic transmission, so how the exception/ build/ blend here with a shared sump?