Oil problem

[Mattdk81]

Hi Everyone

Recently bought my first 2 stroke, a 2007 kx 250. I havent ridden it much yet because of the winter here in denmark. After a bit of riding i wanted to change the oil. The oil that came out looked like new, so i was happy. Even before i got the bike i had already bought some http://www.denicol.com/bigproductfot...ns-special.jpg 15/40 I have used Denicol for years on my kx450f without any problems. My dealer said this oil would be good for this bike. I dont know which oil was in the bike when i got it.
So after changing the oil i started the bike up and let in run for a minute , but then when i wanted to check the oil-level the oil was full of air bubbels and looked yellow/white.

I was of course worried about this, but when i looked again later, the oil level was spot on and clean/normal

I have searched the forum and other people have had simular problems, but i cant find anyone reporting back with what the solution was.

Some say headgasket, some say waterpump seal, some say wrong oil, contaminaton from old oil?

Thank you very much everyone, i hope i dont have any problems already with the bike! My 4 stroke friend will make fun of me!

[1989kawasaki]

id say its fine . in the oil window on my kx sometimes it looks bad (just after ive been riding) but when i drain it out or let it settle it looks normal

[don46]

I would say you have none of those problems, if you had any coolant entering the transmission it would stay milky. I think what your seeing is aeration of the oil, this is caused by the spinning gears, as long as it looks good when it has had a chance to setlle I wouldn't worry about it.

[maddoggy]

I would say you have none of those problems, if you had any coolant entering the transmission it would stay milky. I think what your seeing is aeration of the oil, this is caused by the spinning gears, as long as it looks good when it has had a chance to setlle I wouldn't worry about it.

don is right on the money. if there were coolant contamination it would stay milky. when straight cut gears spin in oil it will foam. it's not good but it is just one of those things that can't be resolved. there are anti foaming agents for oils that help, but because we change oil often in a bike i wound not waste any money or time worrying about it. just check it after a good hard ride and let it sit an hour or 2 to see what the condition is. i change oil after 3 or 4 good rides. alot of guys change after every ride and that seems a little excessive to me. good luck with the bike and roost a little on those 4 strokers that will be behind you.

[1989kawasaki]

see i told ya LOL  .. i am going to roost those four jokes this weekend