Who mentioned HOAT coolant on here? I got a new recovery tank for the Journey. Look at manual and find out it has HOAT. I added some reg antfreeze the other day, and it looks like nothing is compatible with it. Supposed to flush and mix only with DISTILLED water. Should I/can I use any flush additive or just water? Even worse, I checked the book and Magnum had this stuff too. Never knew it existed.:wtf::BangHead: