Hi,
The oil in the pic can be caused by a few things. First, when filling or adding oil to the engine, it is easy to spill it. It can puddle on the top as in the picture.
Next, the valve cover has gaskets that can leak. For the oil to be on top, it may be coming from the spark plug tubes. Remove one spark plug wire at a time and see if they are wet with oil.
Let me know what you find.
Take care,
joe
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Tuesday, October 3rd, 2023 AT 8:27 PM