I'm not sure what you are referring to when you say there is oil in the last three cylinders. Do you mean oil inside the engine or in the spark plug tube?
Also, do me a favor. Check the transmission fluid to make sure it is full. You may have damaged something (radiator) and its leaking fluid. See pics 1 and 2 below for the procedure.
Let me know if you have scanned the computer for diagnostic trouble codes as well.
Take care and let me know as much as you can.
See pics below.
Images (Click to enlarge)
Friday, March 18th, 2022 AT 9:07 PM