Start by telling us if the oil is pooled up mostly in the front, middle or back of the "valley".
The simple answer at this point is . . . "yes." There's too much oil spread around to determine where the leak is more likely to be.
After doing some additional research and reading the above posts I will at least be able to do some elimination, if not find the source, before tearing into things. Fortunately everything isn't covered by miles of hosing or hundreds of covers.
I found one source of information where, if it were the EBP actuator that the easy solution is to pull the actuator guts out and plug the actuator arm hole. I'm wondering, what positive value is there to the back pressure? I assume it's just for emissions. If that's the case, and it it turns out to be the culprit, plug it I shall!
