Not Ranked
I had similar experiences for years before i was convinced it was the seal. I'm guessing that the crankcase pressure shoots it out of the seal on the back of the balancer and the balancer slings it around all over the front of the engine. Most of it you can't see until you pull the balancer.
When I did this job a while back, most of the time spent was cleaning the front of the engine from all the grime that I couldn't see until the pulleys came off.
Sydney
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