I have Car pro Tar-X and the first bottle I got was great stuff and am really impressed with it, its along the same product lines as obliterate from AF. The issue I have is that the first bottle needs to be shaken once in awhile to mix it up. The new bottle I just received after shaken you can literally watch the chemicals separate and drop to the bottom on the bottle in seconds. I was reading the product reviews on autogeek the other day on the tar-x and someone else wrote the exact same thing. I was going to buy the big refill size but i'm afraid now and possible want to try the obliterate instead.. Also the first bottle was more of a darker green compared to this new bottle which is lighter and looks more diluted? Anyone else have this issue? thanks.