It could be remnants of Autosol.
Quote:
Originally Posted by
SiskoWarrior
Could excess oil in the engine cause the smoking? I checked before leaving for the airport and it was slightly over the max.
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What is probably more likely, and often happens, is that when topping up the oil some trickled down the side of the filler hole. If it does it almost always ends up dripping down the radiator and on to the headers and can drip for absolutely ages after the event, even if you think you've cleaned it all up.
If it's filled over the max excess oil tends to get blown through into the airbox via the crankcase breather and fills the airbox drain tube. Have a look and see if there's much in there.