Just did a PI engine swap on my '96 GT. Initially I could not get the engine to idle so I attempted to clean out my IAC valve. It appeared to have some effect since it idled for about 5 minutes until it died. I could not get it to start back up. It would crank but not start up. I checked my oil and noticed that it was contaminated with fuel. I think trying to run off of 2.5 year old gas would have caused my injectors to stick and wash the cylinders therefore contaminating the oil. Does this make sense? is there anything else that would cause my engine to have fuel in the oil? thanks everyone for reading.