okay well i have a 1994 honda civic ex d16z6 with a greddy 15g turbo kit. after launching when racing my buddy one day i noticed the temp gauge was starting to rise. i turn the heat on and it goes down normal. pull over and pop the hood and see that the reservior and radiator are totally dry. put some coolant in and its gone within a couple days. now when it was warmer this week in new york there was no white smoke [kinda sucks trying to diagnose a hg in winter], oil is clean, and there is no oil in the coolant. fan kicks on, and there is no drips on my driveway. there is some coolant on the tranny but i dont know where its comming from. im stumped.