Chaincase appears to have water

[Shane]

I changed my chaincase oil at 300 when I did engine oil. Have about 1,100 on it now and chaincase oil is milky. No visible leaking anywhere. Has anyone else experienced this? Thoughts?

Thanks

 

[YamahaTim]

Well I have not had that problem. But it is not good! I would change again and check all the seals and make sure there are no leaks!

 

[Shane]

Drained the chaincase....no water, perhaps the oil was just THAT burnt?

 

[YamahaTim]

Drained the chaincase....no water, perhaps the oil was just THAT burnt?

Wouldn't think burnt oil would be that color. But crazier things have happened!

 

[FAMILYMAN]

Mine was milky at 70 miles. Just added fresh oil.

 

[TestMaster]

Some synthetic lubes get a milky look after use.

Did you use a full synthetic lubricant? If so may not be a problem.

 

[FAMILYMAN]

Full synthetic here. Mobil 1

 

[TestMaster]

Full synthetic here. Mobil 1

Does your lube get a milky look?

 

[Shane]

Yes, I do run synthetic oils and grease. Amsoil here. Thanks for the feedback.

 

[APEX 06]

Do you park it inside a warm shop after riding?

 

[drumz11]

Not to uncommon on these. Cat guys have mentioned this a lot. One of our Procross sleds looked that way pretty quickly in the oil and chain case. It looked fine during a lube change though and didn't appear contaminated during a lube change. On the other hand, our Cat 7000 oil and chain case looked pretty clean up to the 500 mile change and 500 miles after the change. I wouldn't worry much unless it seems obviously contaminated when you drain it.