I don't think that the break-in stock engine oils happened.Yikes... I noticed the same with mine. I was told that zinc is added to the break in oil that Yamaha uses in all new bikes. I was also told zinc was added to help to seal any leaks and/or gaps in the engines internal components. If this is true then running the break in oil for the entire 600 miles could possibly make a difference and stop some of the seeping.?. Yet the manual states change the break in oil at 600 miles OR 1 month. ?.
A year or so a go I bought a Yamaha 6r from a young girl. She bought the bike new in 09 rode it 324 miles dropped it on her foot in her driveway then pushed it in her garage and left it sitting for nearly 3 years with the break in oil still in it. She started it once a month... she said..... anyhow I changed all the fluids...etc... and it proved to be one of the best running bikes I've ever owned... Go figure.... keep us informed on your leak and I'll do the same.
Awesome info... ThanksMine did this, but has stopped after 900 miles. clean the area off as best as you can with a rag and wd-40.. keep riding it, it might come back a little less. After I cleaned it the 2nd time it hasnt come back.
Yamaha told me its normal, its various greases used during the engine assembly. If it doesn't go away after 1k miles, take it to the dealer.