I have white exhaust coming out of my tailpipes. It's a brand new rebuilt motor, and I checked my oil, and it was fine. I checked my coolant, and it was a little low, so it must be coolant right? I noticed a couple weeks ago it had white smoke coming out of the exhaust, I got kinda nervous about it, then it quit. Well, today I am out driving around and I see it come out, it was mostly out of the drivers side exhaust I believe? Anyways, it smoked everyonce in a while, and then it quit later on when I had someone take a look at it with me, so get a second opinion on what color the smoke was (my girlfriend said blue) but it was definetely white. I also stuck some paper in my exhaust tips, and it was kinda....wet in there? and it was black, black and wet..........hmm? any ideas? again it burns no oil so anyone have any suggestions? and if it was antifreeze/water, did it hurt my motor any? anyway I can diagnose this problem???