UPDATE:
Washed my engine. Just used a garden hose with a mist setting and used some Superclean diluted 6:1 before I hosed it down and agitated with a detailing brush.
Came out great and I used my dog dryer to blow off the water and then just let it air dry for a couple of hours. Used chemical guys VRP on the plastics and am happy with the results!
I didn't take any before pictures... But here are the after...