What are you guys using on parts in the engine bay that have corrosion on them? Ive noticed that the alternator, AC lines, intake manifold, fuel rail, etc all look like shit as it seems as they are corroding. I sanded down a flat surface which obviously removed the corrosion, but Id rather not do that do ever little part. See example below: Also Ill snap some photos of the other parts later today as they are much worse than the letters above. Thanks!