[not_hans_stuck]

I can fill you in. There's two things going on.

First. LS engines are good to 240 degrees. They run at hotter temperatures to assist with emissions and power.

Second, there's a thing called Hysteresis. This is an engineering term meaning that the response to the input is nonlinear.

How it applies in this case is with your temperature gauge. Most commercial cars do this, but I cannot confirm that the Escalade has it. I think it's a 99.9999% chance.

How it works is this. The gauge is linear from cold to say 185 degrees. Then from 185 degrees to, for instance, 240 degrees, the gauge doesn't move at all. Once the temperature goes past 240, it's linear again.

This eliminates people stopping for service because they're worried about their cars temp yet still allows the car to have a gauge instead of an idiot light.

The gauges in your porsche don't do that. They report the actual temperature. That's the difference you're seeing.

Get yourself an ultragauge or something like that and plug it into the obd2 port on the Escalade, you'll see the temps bouncing all over the place.

And, yeah. We should do that. I still have to build some confidence in the car. It's been running great but, I'm still a little nervous about it.

Hal