I just got a 300se and it seems to run hot. On the hiway the temp is around 80 on the gauge. In stop and go traffic in the city (85F outside temp) after it warms up it takes 5-10 mins for the temp to run up to 100. Both radiator hoses are as hot when running and I drained all the fluid. It was superclean with no rust. I removed the thermostat and it is clean and when I flushed the motor everything comes out clean. Is this car just supposed to run like this or am I missing something? Thanks in advance for any input. Randy