Get some 303 Aerospace protectant, you can find it on Amazon. Spray your entire engine bay(excluding the coil) right before your drive it, do that everyday for about a week, maybe a bit longer in your case - but it will clean itself. I use that on my engine, interior, tires, cowl, grilles, etc. It's a UV protectant and dirt repellant.
| Ford of Europe | Hofele | Rieger | Hella | OEM+ |