For those who have a xk, is there anything special that you use to brighten up/shine your front s/s grills? Thanks in advance!

 

There are plenty of polishes but it is hard work to get into all the overlaps to clean, easiest and quickest I have found (possibily cheapest too) is to use a small wire brush.

You can often get them at hardware stores, a bit bigger than a tooth brush, you can use something a bit larger for the center section but for the edges you will need the smaller.

Good luck