engine oil street triple

[Dazboots]

i keep getting what looks like engine oil on botom of engine case below the dip stick.
does anyone else have this problem.
there is no leaks coming from the dip stick.
i have a triumph street triple.

 

[wazza300]

cleaned it off and looked to see where its coming from? could be engine cover gasket leaking?

I fixed one on my zx6 which had been leaking for years (generator cover gasket) but if its the dipstick side then it could be timing cover or clutch cover gasket