Hey guys I've got an itch to clean out my engine bay and the engine since it's pretty filthy in there and I'm trying to tidy everything up before I get it painted later this year. I'll have to clean it while it's in, since I don't have the equipment or know-how to take it out, and I use it as my daily so can't afford to have no wheels at the moment. Does anyone have any suggestions on products to use since the engine is so old, I'm assuming I would need something pretty heavy duty but am worried about damaging any wiring or tubing with something too strong. I've done a bit of reading about citrus cleaners that work well, but might take a few goes depending how stuck on the filth. Advice?