Hi,
The idea that the crank sensor may have been the issue? Yes, I feel it could. What to do is this. If the car shuts off again and won't restart, check to see if there is spark to the plugs. If the problem is related to the crankshaft position sensor, you won't have spark.
Here is a link that shows how to test for spark:
https://www.2carpros.com/articles/how-to-test-an-ignition-system
Another thing you can check is if the tachometer moves at all when cranking the engine. If the sensor is bad, it won't move at all.
Here is a link you may find of interest:
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
As far as your analysis, I agree. The only thing to keep in mind is oil doesn't evaporate. Hopefully, it has cleaned off and won't give you trouble. If you do experience any more issues, let me know. I'll do my best to help.
Take care of yourself, and feel free to come back anytime in the future. You are always welcome here.
Joe
Friday, August 27th, 2021 AT 8:41 PM