Dave, good luck with your trip...I hope it was just a ''fluke'' so to speak... I would have to look at some shop manuals to see if there is a way for it to get to the exhaust stream like my deisel. When you have a cooler, like I have for the EGR valve on my Cummins, it can leak into the exhaust stream and just get vaporized...I don't think this engine is built that way...at least I can't find any way for it to get there right now...