I bought a 2017 FLHTK on 7/16. Thanks to this forum (https://www.hdforums.com/forum/milwa...ion-fluid.html), I kept a close eye on the transmission fluid level. I took it to my dealer for its 1000 mile service. I told them to check the primary level before draining it as I've had to top off the transmission fluid twice and I've heard of a migration issue on some forums.

They called me back and said the primary level was high. They called the motor company they are shipping parts to fix the issue. The motor company seems to be aware of the issue, but there probably has not been enough claims to warrant a recall.

The dealer completed the 1000 mile service and I picked up the bike. Since I use my bike as my daily commuter, I will schedule the warranty service in October when I'll be at the HOG rally in Maui. Until then they suggested I continue to check the levels and adjust it as necessary.

If you have a 2017 M8, I suggest you check your fluid levels more frequently than normal and if you notice a migration issue bring it to the attention of your dealer as the motor company seems to be authorizing the repair for this issue.

 

That's good news at lease there dealing with the problems the dealers near me say they never heard of such a problem. Had the same problem with my 17 RGU at 6000 miles never liked the ride so I traded it back for a 17 Electra Glide Ultra Classic so far no problems here.

 

I agree! I had exactly the same experience. The factory is aware of the problem and sent part's to my dealer for the repair. No problem's since the work was done.

 

How high? to the point of needing to suck some out of primary? Checking tranny is one thing.

 

Certainly not the right way, but I'd check the trans and fill it to the previous full mark noting how many ounces I put in (if it needed fluid). I'd assume (I know, I know) that the lost ounces were in the primary. If it were only a few ounces and I wasn't having any shifting or clutch issues, I'd leave it until more was in there.

 

Agree. But not sure you would even notice a few ounces gone, when there is a quart in there.

 

were both times checking done after the 500 mile break in, which assumes you kept it mellower in rpm range, then some pouring the coals to it rpms for the next 500 until the 1k discovered the issue, or a combo of before and after break in?

 

The first check was at 500 after I followed the break-in procedure. The second was just before I took it in. I am not a hard rider. I live in Hawaii, so I don't have a lot of open roads to ride at high rpms. My daily commute is 20 miles a day.

I think it's worth noting that my bike was part of the last of the 2017 production runs. It was shipped on June 9th out of York PA. Which tells me they haven't fully identified the cause of the issue. But it does seem odd that not everyone is affected. I don't know, maybe the ones having issues were assembled on a different line at the Tomahawk plant or with a bad set of seals? As more and more are reported, I'm sure the motor company will find the common thread as to the cause.

 

When I checked the level both times, it was at the A (add) line. When it says it's time to add, it's time to add. I'm a good boy, like that.

 

For entertainment and knowledge, this thread is a fantastic read for all who have ANY transmission oil migration issues........

Long but informative......

https://www.hdforums.com/forum/milwa...ion-fluid.html