Well here is a truism :
<<which oil to use ??.....ten people, ten different answers.
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There was a very long article about 9 years ago my an engineer in California.. He found that all oils from the best synthetic to the cheapest motorcycle oil all started to lose their viscosity after 1500 mi and have much much less metal protection after 2500 .
As well after 3000 most of the additive package( detergents, dispersants and acidic buffers ) in the oil have broken down.
And he found this was true for all the oils he tested.
See Here :
http://motorcycleinfo.calsci.com/Oils1.html#Oil
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The real point is that 1200's have a much higher ( and more expensive ) risk factor in their oil immersed stator ..
Its possible that the corrosive acids in older oil can slowly destroy the poor old stator coils .
and Re and Re on the stator will cost you $1000+ from Honda , or most of a weekend with a good friend , if you choose DIY.
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So heres my advice : I use any quality oil I can find with no "Friction reducing " on the logo, and with the JASO MA rating
Good Motorcycle oil is often on sale at Canadian Tire, as is the Rotella.
... and I change my oil every 3000 to 4000 km .
Oil is much cheaper than a stator repair !!
A 30 yo machine can often have starting problems from gunk in the starter sprague gears.. They sometimes miss on the start, especially if cold.
So I throw about a 1/4 liter of MMO or Seafoam in the oil about 100 km before that frequent oil change .
The disgusting gunk that always comes out is a good thing for the starter gears, and if its that black, its probably partially acidic ..
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but as Steve said : << which oil to use?.....ten people, ten different answers >>
LOL LOL.
SilverDave