Are you sure that leak is coming from crank seal and not somewhere above it. If you changed front crank seal, and you drive a car equipped with a lt1 engine, there are 2 more seals on timing cover besides crank seal.
You should always state what year, make, model, engine, trans, your car is. It will help us to answer your questions.
Just had then same problem, it only leaked under pressure from the opti seal. Replaced distributor and it just started leaking. Replaced that seal 2-3 times. Listening to others check, this check that, might be another seal...NO. Lifted the car and watched oil find its way out around the opti seal area only. I figured the seal was not tight with distributor well that was not the case. I pulled the seal one last time and there was a small puddle of oil under seal where it seats on the timing cover, figured it’s only one way oils get there; not mounted flush. Found out it was not all the way on but it Damn sure seemed like it was. New seal is slightly recessed with the timing cover and oil leaks is no more. Just a thought and best of luck.
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