Hi Guys...I love my 05 Road King Custom, had it for a year now no problems..
I thought I would put Red Line Heavy in the tranny over the winter. I think it was a mistake, as now I have developed a leak at the bottom of the tranny.
It is not the drain plug..or the shift lever, and I do not see it coming out of the main shaft area either..If I shine a light over the primary I can see it at the bottom below the main shaft, like a little ridge area, where it is collecting..Some one mentioned it could be the trap door, but I do not know where it is or what they are on about. Probably should of stuck to conventional oil, with a 5 speed.
Any thoughts on this appreciated...Thanks Brummie..

 

I guarantee you it's not the fluids fault. That stuff is much thicker than 20w-50 so if it's dripping out motor oil would pour out.
Get it up on a stand after a good ride while it's nice and hot and trace down the leak.
I have been using shockproof heavy since I bought my bike and it hasn't sprung any leaks and that stuff is so thick and sticky I seriously doubt it could cause a leak.
I would love to know how it could cause a leak. It's not detergent like engine oil is,it's way thicker,I just don't see how it could.

 

Hi There...Thanks for the reply..I do not think it is the oil either..Although I have heard people say you can have too thicker oil in the tranny...Looks like it has to be stripped down any way...I think I am going to leave it and just check oil level occasionally....The oil leak for now is only the size of a dime..Any idea of the cost if the stealer was to fix it...Thanks Brummie

 

If you pull the tranny yourself about $600 (that is what I did).
If you let them do all the work add about $800 to that.

 

I had a leak, I replaced the gasket myself, unless I'm confused, numbered the screws as they are different lengths and got the harley gasket for around $30, torque as per the manual with blue loctite.