This can't be good ....

[Watsonian]

Searching for a slow oil leak and found this crack. What does one do to fix this?

 

[ruzzle]

Only thing to do is clean it off, then run engine & watch closely to see where oil is coming from. Might take a while.

I reckon it's more likely to be one of the adjoining gaskets....if not, you might be in the poo...............

 

[RocketandRollit]

Looks more like a casting blemish than a crack.

 

[Gothlander]

Just checked mine, it seems to be a casting seam.

 

[Willtill]

Don't know if JB Weld would be able to come to the rescue on this one; if it was a actual crack. I'd definitely give it a try though; if that's the actual case... JB Weld is some pretty amazing epoxy.

 

[Watsonian]

Is it leaking through the length of the crack or at the junction of the crack and the gasket?
Is it a crack or a deformity in manufacture?

Can't tell if it is leaking there or not yet, as the leak is very slow. I have thoroughly cleaned it out and do not see anything seeping through it. I see in a response where Goth says he has a seem in the same place. This would be a very sloppy seem that I can stick my finger nail into if that is the case. Would be great if it is just a seem. The only place I have actually seen oil is at the bottom left corner of the engine, I assume because oil is running there due to leaning on the kick stand. I am going to run it today and see if I can locate the leak as I have thoroughly cleaned the engine. Thanks for all the tips guys.

 

[Watsonian]

Checked with Yankee, who has an 05 as well. Goth was right, this is a seam on the engine and not a crack. That is good news, now I just need to figure out where the leak is coming from. Ran the bike for 15 minutes and no leak so far. Thanks for all the advice.

 

[Gothlander]

The leak is probably from the front cover, just re-torque the bolts as per the manual.

 

[Watsonian]

The leak is probably from the front cover, just re-torque the bolts as per the manual.

Will give that a try and see what happens. I suspect you are right as the leak has to be coming from above the sump seal. Thinking maybe the large swings in temp and something a little loose is creating the leak. No leaks yet since checking it earlier.

 

[MsLizz]

not that I have a CLUE, but I was getting a few leaks & we finally determined that when we did an oil change, we overfilled it. freaked me out...