Antifreeze in oil

[Cberg]

I have been camping and riding for a week on my 2011 EC 300 Nambo. Riding in technical terrain some big hill climbs and a few water crossings. Bike has been working fine but on day 3 was getting ready to go and checked my antifreeze level which I do before almost every ride and have never had to add a drop, but this time it was down and it made me wander???
Looked at the oil sight glass and it was completely white!! Dumped the oil and the first few seconds was straight antifreeze. Seems odd for this just to happen all of a sudden after a ride. I'm assuming most likely head gasket, hoping my head isn't warped.

Has anyone else had this happen to they're bike?? My bike has 70 hrs.

 

[Jakobi]

Most likely the water pump seal. Sometimes it will cross both ways where it can either draw oil into the coolant, or the coolant into the oil. Have a look under the rad cap and you might see a bit of oil/foamy residue on there too. Quite simple to replace.

 

[Cberg]

That was my first thought.

Antifreeze gets into the crank when the bike is just sitting and not running so that's what made me think it was the head but I guess if the pump seal went it could leak as well.

Thanks.

 

[twowheels]

Most likely the three piece water pump seal. PM me if you need one right away.

 

[Jakobi]

Are you saying you had coolant in the crank cases as well? I'm a bit confused. If you warp the head or blow the inner o-ring you can lose coolant into the cases, but on a running engine most of the coolant will be burnt off and should give that sickly smell that burning coolant gives. It'll wash the piston dome clean, and you'll just notice the coolant dropping without any other signs. If its going into the pri cases (gear oil) its likely the pump seal.

If in doubt, pop the head off and inspect. You'll see if water has ingressed past the o-ring, and they are cheap enough to replace.

 

[Cberg]

Sorry Jakobi, it was the gear oil that was full of antifreeze.