I have a 2003 Harley t-sport. All of sudden the last two rides i have taken i have had started spitting out oil of the transmission breather tube on and off during the ride. It has never down it before and it has be about 1,200 miles since all fluids had been change. Not sure while all of sudden it would do it. Any ideas what could be causing this. Bike runs and shifts great. Thank you all for you help!

 

I had a 98 ultra that did that when i over filled the tranny.It will also do that if the tube is getting block for some reason(like to thick of oil or gear oil additive)builds up pressure then blows out the vent tube.

 

I have seen that in extremely cold weather or when it’s overfilled. When it’s just too cold the oil is just thick and gets whipped up.