I think that is just a wet/dry effect in the pic, as I took off the plastic pieces when I sprayed the cleaner on. I got that cleaner at a little handymans market for 4 bucks a gallon!Wow...Mudlord.. That is a big difference.. I noticed that on the right side plastic, right next to the engine.. the before pic plastic was fine, but after it was clean..it looked like the plastic flaked or pealled. Was this from the introduction of this cleaning agent ??? Or was this just a wet / dry pic and it was always like that.. Hmmmm Just curious..