I just got a new yz450 and got just did my first oil change. When I drained the oil it was kind of milky looking. I used to have a crf250r and never saw oil like this come out when I changed the oil. I checked the coolant and it was not low at all, and when I rode it I didn't go through any puddles. I was wondering if this is normal or should I take it into a shop, the bike is still under the 30 day warranty.