W115 oil in the intake

[BluePanzer1975]

Hi all.
I have a '75 240D I've been getting back up to snuff and have noticed some oil dripping from the rubber boot that connects the air cleaner to the intake. I'm hoping this isn't a sign of excessive blow-by but if it is I'd rather know sooner than later. Doing the oil cap "test" it dances around but not enough to get kicked off the valve cover.
Just trying to gather others thoughts right now and possible solutions.
Thanks