Everybody is correct. What fish eye eliminator does is turn your whole paint job into one BIG fish eye. Clean, Clean, Clean...I generally look at the interior of a car and if I see shiny vinyl or dashes I clean the interior of the car. Shiny can mean silicone cleaners and "protectants" used on the interior surface. This contamination can travel through the air vents and contaminate your paint, especially in colder climates. If it's cold outside and the car is brought inside the air inside the car will expand as it warms up, causing the cabin air to release through vents and cause problems. Hope this helps.