Drove around yesterday and hit 227°F during normal driving... I did no more than 45mph. The temp stayed in range of 190-194° on the way to my destination then started to creep up.
It is definitely an airflow issue... because on the way back home, I was driving into a headwind and my temp came down rather quickly from @225° to 203° and stayed pegged there.
Next time I take off my bumper cover, I'm going to install some foam packing on the sides of the radiator to help keep air flowing through the radiator instead of around it. I have the top and bottom of the radiator covered well. Hopefully this helps.
Upper foam packing...
Lower foam packing...
Btw, oil temp never surpassed my coolant temp.... I remember seeing 209° for my oil temp at one point during my drive.
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