Silicone products may seem to work just fine, however... Over time, silicone will work it's way down through the layers of paint onto the metal itself. If this happens... The only remedy for this is to have your vehicle repainted. There may be some instances where this may not occur, but for the most part... It will! Just ask a painter if he likes working with silicone based products! It is more time consuming for a painter to remove it and ultimately... More money out of your pocket if you need a new paint job. So whether you are a novice or a professional, products that are silicone based... Should be avoided!!!:xyxthumbs