Well, I just did a detail on my engine compartment today. Just got done actually and it turned out great. I broke my camera so I wont have any pics of anything for a couple weeks atleast so... I used simple green diluted because the engine was already pretty clean to begin with from when I degreased it with Gunk a couple months ago. I used some tooth brushes, cuple rags, and CD-2 Detailer to dress things up. I have to say I really love the look the CD-2 Detailer gave the engine. I sprayed everything. It's sitting on there right now and I will wipe down in about 20 minutes to smooth things out cause it does run a little and leave streaks so I will give it a wipe down with a vroom m/f towel to smooth things out. I also used Flitz for the first time today. Only had the polish and a regular house rag to use so I didn't get the best results I probable could have. I used it on the metal caps under the hood and it made things look alot better. I also used S&W on the painted surfaces under the hood.