Hello I am a new member to the board and of course I learned at lot already wow!My qustion I have been using liquid glass for about 15 years and have been pretty satisfied with it as my vehicles are outside all the time.Any other products hold up as long ?and my last qustion what can I use on the exterrior gray/black hard plastic? Vinylex is ok but washes off any product ideas ? Thanks :nixweiss