/6 rebuild advice
Sneaky Pete - going to have to remember that guy.
I am going to pressure wash the engine and add the black light dye to the oil. After a couple days see if it is or isn't the seal.
Fortunately the radiator was the over heating culprit and I am pretty sure I have a vacuum leak causing a loss of power. A few problems with my new car causing me to think ahead to a possible engine change.