I need help. I was driving down the highway when my thermosat all the sudden read 'Hot' seconds later the engine siezed up! The mechanic at the dealership said I had no fluids in the radiator!! How can this be? I never noticed any leaks where I normally park the car and there were no visible signs of tear on any of the hoses or holes on the radiator itself?!! I simply follow the manual's recommendation on flushes and simply leave that for the dealership to handle. What the He** went wrong?!! Will someone please clue me in!!

I had problem with my 1995 millenia. Radiator fluid leaked from the hose connections to the radiator in 2003. I monitored the temperature gauge and the radiator fluid to detect the leak. I had the leak traced and the hose refitted. The radiator cracked in 2005. I had it replaced. Luckily my engine was never seized. At one time the temperature gauge tipped all the way to the H(hot) letter. I turned off the engine and waited for it to cool down before driving to the mechanic. If your engine is seized, I think you may be looking at an expensive repair bill.

I ALSO HAL A PROBLEM WITH RADIATOR FLUID LEAK,AND IDID NOT KNOW WHERE IT WAS, I COULD'NT SEE ANYTHING LEAKING AND THE RADIATOR WAS ALWAYS EMPTY AND THE NIDDLE GOT HOT! FINALLY I PRESSURE TESTED THE RAD.THERE WAS A CRACKED HOSE NEAR THE FIREWALL THAT ONLY LEAKED WHILE DRIVING SO CHECK THAT OUT ALSO THERES A HOSE AT THE BOTTOM FRONT OF THE ENGINE IT IS LIKE A BYPASS HOSE OR SOMETHING ITS ABOUT HALF INCH WIDE OK! HOPE THIS HELPS. THANKS!

Also, the coolant overflow plastic bottles in these cars can develop cracks at the seam and leak slowly.