06 infinity m35 temp gets hot when at a steady rpm on freeway or parked ?

What is your question?

Changed thermostat already. Car doesn't overheat in stop and go traffic or if idling with ac on? Radiator was replaced a few years ago? No leaks. Did change the fluid a few months ago and the bleeder valve broke and didn't replace it just put a straight tube in with no bleeder?

What makes this problem better or worse?

Steady rpms makes temps rise

How long has your 2006 INFINITI M35 had this problem?

A few months since I changed cooloant