Cannondaleriders

My tranny oil appears to have something leaking into it. It looks like chocolate milk even after it has been changed - any idea what the problem is???

Sounds like your coolant is mixing with your oil. Check your coolant level and you will know immediately. It may be the gasket or a missing bolt on your piston pin access hole on the inside of the case.

Most obvious place is the piston pin access cover "O" ring, very possible that the bolts that hold it in have come loose. You might be able to spot it with the clutch cover off and the clutch basket out. That is all I can think of for now, maybe somebody else can think of another spot or two. Look for rub marks on the back of the basket.
Ray

Thanks for info - coolant is way down in resevoir!

Could it be a leak in the valve cover?