So i dunno wats causing my supra to overheat...only starts getting warm after 25-30 minutes..never goes all the way to the "h"...but goes up more than normal....no water in oil...no smoke...nothing coming out of overflow...but still gets warm...headgasket is 2 years old...water pump is 3 years old....thermostat is brand new as of today...dunno wats wrong...have tried the inclined hill thing like 4 times to get rid of air...any other suggestions ?