Oil Leak at exhaust flange

I have a 94 KTM 250 2 stroke which has started to leak what appears to be oil from the exhaust flange at the meeting of the pipe. it is very black however the oil in the crank is clean. is it excessive oil in the fuel or do i have a major problem?

No major problem. The proper mix is 32 to 1 gas and oil. That equals 4 ounces of 2 stroke ENGINE oil to one gallon of gas. Do not use MOTOR oil in the gas. 10w40 motor oil is what goes in the gearbox. Tighten the exhaust flange.

A top ranking please ... Thanks BJS!

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