08-10-2015, 11:13 PM
If the user manual is not enough to convince people, I think Ferret once posted a picture of an oil chart hanging in his dealer that showed for Honda they switched from recommending 10-40 to 10-30 at a certain mfg date...I forget, was it around 2005 or earlier?
Ferret, if you can link to that picture again I can copy it down and refer to it as needed.
I think that is also why the old timers who ride CB's are dead set on 10-40, they grew up on that viscosity, and it will not be pried from their cold dead hands!
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You should see the oil threads on my BMW car forum with the following list to choose from, and people still recommend other weights :-)
------from user manual------
Approved oils belong to the following viscosity
classes: SAE 0W-40, SAE 0W-30, SAE 5W-40
and SAE 5W-30.
Ferret, if you can link to that picture again I can copy it down and refer to it as needed.
I think that is also why the old timers who ride CB's are dead set on 10-40, they grew up on that viscosity, and it will not be pried from their cold dead hands!
------------
You should see the oil threads on my BMW car forum with the following list to choose from, and people still recommend other weights :-)
------from user manual------
Approved oils belong to the following viscosity
classes: SAE 0W-40, SAE 0W-30, SAE 5W-40
and SAE 5W-30.