yea, lets hope thats what it is and not the headgasket, good luck man i hope thats what it turns out to be...also, inspyral would prolly know the answer to this, does the f22 and h22 run at close to the same operating temperature or not? Cause you are using everything off the f22 right? even the thermostat? so say that the h22 stays a lil bit hotter then the f22 , this would cause this, unless of course the gauge is going ALL the way up. Is it just staying a lil too hot or is it going all the way up?