I'm wondering if anyone has experienced this. I was changing my oil using Valvoline 10w40 motorcycle oil. I had put 2 quarts in and when I started pouring third quart a white milky substance was in the oil. I stopped as soon as I saw it, probably around 4 or 5 ounces had gone in. I call the phone number on the container and talked to a rep who explained that sometimes when oil sits along time the additive separate. He said to shake it up and then pour it in and it would be fine. That didn't sound so good so I replaced that quart with a new one. The next day I took a ride and when I got back I check oil and the milky white substance showed up on upper part of dip stick. I called Valvoline and talked to a different rep and he said if additives had separated it would not be white. He said it was probably moisture and sense I had only put in a few ounces it would not hurt anything and the heat from engine would evaporate it. He also said he was going to send me 6 quarts to help make things right. The milky substance looks like a cream of some kind and I don't know what it is. I am not going to ride until I change oil but does anyone know what it might be besides moisture and can it damage anything. Any comments will be appreciated.