When I wash my car everything comes out beautiful except the plastic pieces. What is the best stuff to use on the border of the grill? That grey plastic always looks awful and filthy.

 

After I wash my car, I go over the finish with Zaino quick shine, and that also makes the plastic trim shine and look like new. I'm sure you could use any brand of speed shine, but I've used Zaino with good results. I even use it on the moulding to keep it shiny and supple. That stuff is great!

 

Dry with a microfiber towel. It makes a big difference. You'll need several if the car is fairly wet. I use 3 and that works well. When the grey plastic is dryed thoroughly with a MF towel it looks just like new!