Pulled the valve cover today anyone ever see this stuff?

lemondana said

In the past whenever I would see that, I'd ask the owner what type of oil they used-the answer would always be Pennzoil.

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I'm not sure how far back that past is, but in the '80's, the answer was Quaker State. I'd pull the valve covers off of a 302 Ford, and the oil gushed out because none of it
could make it back to the pan! It looked like someone melted a box of candles over each head then bolted the covers back on! If I remember the API threatened to pull the
certification off of them because they were cheating on the additive/detergent package in the delivered product vs what was submitted for approval. The phenomenon just
magically happened to dwindle away, there is something to be said for oversight......................