Geez, you guys are tough.
As I sed in previous note;
PS: I know that some won't believe a "forgetful" old timer. <grin>Cholla, (not being critical of you, but) have you tried the tranny fluid?
If not, try it before you say it won't work.
You might be surprised...
Lots of things that members of this club have done to the Concours are not supposed to work.
But they did.
Have to admit though; Cholla's right about the viscosities varying. (I had forgot about that).
Back when we did it, (we were poor and initially did this in our dirt bikes).
We did a simple test to determine the fluid viscosity.
ie; We; had a Funnel with a tiny opening.
Poured a measured amount of fork oil thru it and timed it.
Then we repeat the test with several Tranny Fluids (and some hydraulic fluids).
Since that time, others in the club have done the same.
(Somewhere in the COGdom there is a chart of the results)
As I sed, We did several brands and found that there were differences.
Those differences were not as extreme as you might expect.In our case, we simply selected 1 brand that matched the fork fluid viscosity, and used only that brand.
But all worked.In this case, we're talking with someone that has never changed his fluid, is using a in-exact quantity of fluid (sucked into the forks), not doing the more precision (measured level) , on a early Connie with, only a small amount of travel (compared to 12" in a dirt bike).
I honestly don't think the difference will be noticeable.
But, if it is noticeable,,,, he now has an easy/quick way to change fluid for a comparison...
And it is also a cheap way to flush his forks.
Which was my point. The tranny fluid is a cheap way to do fluid changes, and it will work.
Ride safe, Ted