I've noticed some times some (just a bit) moisture coming out of the water pump's drainage hole after riding (Dry riding weather). According to the Haynes manual this might indicate that one of the water pump's seal have failed, or is this normal? Have any one had the same experience? If it's the seals I reckon the BMW dealer will fix it for free as the bike's not two years old yet. I'm planning to change the oil and oil filter myself as soon as I've got some free time. But must'nt the oil be drained if the dealer have to fix the water pump? If I'm right its no point in me changing the oil now. Am I right in that they have to drain the oil?