So two days ago, i go to my car and start it, it's all fine and I moved it up my driveway to remove some of the ice that was on the driveway under the car. After I'm done I go to move the car, and it doesn't start. Ok, I try again, nothing. I check everything, and it seems fine, i move it down the driveway, by puting it on neutral and it rolls down. Wait, nothing happens. So take it to the dealer, and today I find out nothing si wrong with the car. I'm like what, the dealer said it's running fine. I asked him if it had anything to do that the car was standing on a slope (since this already happened, after standing on a slope, it wouldn't start), and he says no. Well while i'm there this guy asks my dad and me what the problem is, and we explained it to him. He said to get this stuff called CDT, i'm guessing it's an engine cleaner, based on the stuff he said. He said that you put this in to get the dirt and all that bad stuff of the metal on the engine. I can't find CDT, so is there any other products, or CDT stands for something and I should look for it, or is CDT just crap and I don't need it? And if anyone had the same problem where the car doesn't start after standing on a slope, tell me.