The bike rides fine ,but i have a slight creamy mixture in my oil cap,

what causes it,help please ?

Possible head gasket failure. How's it running temperature wise?

coolant mixing with oil end up like mayonaise. Usually head gasket failure, or waterpump seal.
Its nasty stuff and can be corrosive so drain asap. Whip the head off and get it checked for flatness

If your bike is running absolutely fine then it's most likely coolant getting in and not head gasket failure although check both, better to be safe than sorry :)

Joshh wrote:If your bike is running absolutely fine then it's most likely coolant getting in and not head gasket failure although check both, better to be safe than sorry :)

Six months late

And to keep this zombie topic going....

How much cream we talking about here? If you let a bike sit for a long time in a damp climate (the UK!) water condenses in the oil and can leave a creamy residue on the cases. If it is a lot of cream, then yeah, big problems.

^ what he said, a little in the cap is nothing to worry about, if you drained the oil and it was ALL like that...then you have a problem.

it will just be cool air (remember there is a two-way breather pipe from the crankcases to the airbox/outside air) thats mixed with a small amount of oil.