Originally Posted by SD Crossfire

These cars seem to run very cold though, I think it's that weird gauge having the default slightly above middle that scares people into thinking these things run warm. Based on my OBDII reader, my Crossfire is the coldest running vehicle I have.

My E90 would run as high as 234F, which is normal in "Eco" mode, and my new RAM Rebel will typically cycle from 205F - 230F in normal driving, again considered normal for that vehicle. What's interesting is both their analog gauges would show at the 1/3rd level even with the coolant in the 230F range, well below the middle mark of my Crossfire which was actually running cooler actual temps.

Get a cheap bluetooth OBD2 reader, use the Torque App on your phone and see what temps you are really running. You will realize these cars don't need any extra cooling.