Sure you can, and if you want to get the wheel wells to stay black, I have an Adams product called Under Carriage Spray that works awesome !! You spray it in your wheel wells, let it sit, and it takes that ugly looking grayish look of the plastic, at turns it black, like it was meant to be. Here is a couple before and after pics of what the under carraige spray looks like on a couple of different cars I detailed.No greasy feel to it and you can knock the shine down as well if needed. The shiney look in the wheelwell of the Cobra was not knocked down, I wanted it to soak in the plastic as much as it could since it had NEVER been taken care of before.I dont use it on everyones car, but when I do,they really notice it right away. It makes that mostly neglected area, look great. Its all about the details !! Anyone with the club that is going to WOW with thier car in March, that is one place the judges look at !!Under carriage spray 1.jpgUnder carraige spray 2.jpgUnder carraige spray 3.jpgUnder carraige spray 4.jpg