HELLO ALL, I HAVE SEEN SEVERAL TOPICS ABOUT HEATER FLUSHING, REVERSE FLUSHING ETC , MY QUESTION IS HOW DO I DO THIS , OBVIOUSLY YOU REMOVE THE HEATER HOSES ,BUT HOW DO I TELL WHICH IS INLET AND OUTLET OR DOES IT MATTER , DO I USE WATER PRESSURE ,AIR PRESSURE OR BOTH,I HAVE A 93 YJ ,I6 ENGINE, THANKS VERY MUCH GUYS:thumbsup: