Interesting you should ask (timing). I just received an order and when I shook the optimum polish it seemed like water. I shook it some more and squirted a little out on a paper towel and it was like water. I thought, this can't be right. I opened it up and could see globs of settled product.
I had to shake the !@#$ out of it to get it blended - clearly this material sat on a shelf for a long, long time. Lubricant/carrier separated from the aggregate mud.
So I'd suggest you shake it real well and then shake it some more. Maybe even stick a long, clean screwdriver down in there to make sure all the product is mixed properly.