First of all a big hello to everyone from Holland.

I bought my RK '06 6 months ago with 5000 miles on it.
Unused condition (or close to it).
From the first day the 4th gear makes a high pitched whining noise, not very loud but very clearly audible. It varies with the speed so: faster means higher pitched noise.
The dealer serviced it at 10000 miles, and they put an additive into the new transmission oil.
After the service (including the additive) it changes gears infinitely easier just as if there were no gears in it, but the noise stayed. Not better, not worse, the same. The dealer says it will work after more miles but??? I do not know.
Does this sound familiar to anyone, what is the cause, and what could be the cure?

Many thanks in advance.

 

Forth was known for being noisy in earlier models but not in 06. In 06 those were high contact gears. Drain transmission and fill it with .680 liters of Redline 75w250 full synthetic shock proof gear lube and see what happens. If that does not quiet it down you are left with 2 choices: replace forth gear or get louder pipes.

 

The oil change for sure is an option.
Louder pipes ain't. Had Vance and Hines put on (Twin slash round).
After a week, before the neighbors would start complaining, I bought quiet inserts. Not very quiet, those inserts. Love the sound.

 

When I first bought my 06 used it had dino oil in it and no whine. Changed oil and I had the whine in my 06 ultra using Spectro 75W 140 synthetic trans fluid. Changed to another brand of oil 75w90 full synthetic and do not notice the whine at all now. Could be just the type of oil you are using.

 

Since you are in Europe you might have a difficult time getting Redline oil. Try any 85w140 gear oil. But ask your dealer what they put in first. If they put 20w50 oil or 80w90 gear oil then try heavier. If they put in 140w then you are stuck with the whine.

 

My 06 EGS whines in 4 th. I like it. Sounds like the engine is really pulling in air. And I use it as a gear indicater. Sometimes I forget what gear I am cruising in. Ride safe.

 

Thanks very much guys.

Red line is available here in Holland, so I'll get some and try it out.

I'll keep an eye out for threads where I might be able to repay the effort.

 

My 05 FLHT did that from day one. More annoying than a real problem.