My new turf tiger with a kawi liquid cooled engine just started to use coolant. Last friday I needed to add about two cups to the overflow tank on the side. After a long day of cutting it was dry again. engine seems to run hotter than normal. oil is clear, no drips on the trailer or the shop floor. I pulled both plugs and they look clean, no strange smells.....realy has me and my dealer stumped. with only 150 hours I hope I didnt get a lemon. It is at the dealer right now getting a preasure test. for the second time......any thoughts I am getting a little bit perturbed.