Oil in intake boot

On my last ride i noticed there was a some oil that leaked out of the crank breather hose and there was a dime size pool of oil in the intake boot with what looked like a small clump of dirt or sludge or something. Does anyone know what either of these could be from?

Edited by ttr250dude

I always put a liberal amount of grease around the air filter sealing ring. If i got a bit of grease in the small pool of oil would it look sludgey if it sat like that for a while?

If you oil your filter and then install it right away (within 2 hours), the oil probably came from the filter.

I cleaned/oiled the filter a day or 2 before the ride.

I cleaned/oiled the filter a day or 2 before the ride.

How long between the time when you oiled it and when you installed it? Did you squeeze out the excess?

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