my E430 rocket

ptcruiser

A little high, but not dangerous. Does it get lower cruising down hill?

ptcruiser

Just saw your in Florida, so the hill question isn't valid. your in flat as a pancake country

cameron1292

If it goes over 100 then get it checked out. I'm in Florida and my 210 and 202 are always at like 90ish its hot down here man. At night though driving mine is at 80

walterk55

mine is always about 85 and I have never had any problems. These engines run hot (nice on very cold days as the heat comes up very quickly !)

Yours looks a tad high

Maybe try a flush, and add Water Wetter (supposed to help ?)

cameron1292

A flush will always help. But I doubt it will bring the gauge down. Like I said I'm in Florida and the already hot Mercedes engines get hotter here. When I lived in Connecticut and Tennessee in the winter they would stay right in the middle. It's been in the 80s here so mine is right where his is.

cameron1292

If anything fan might not be kicking on. Listen to see if you hear it

110reef

Mine runs there when idling or stopped. It runs lower, more in the middle, while at highway speeds.

ptcruiser

You can always change the thermostat to a lower temp. The truth is that the hotter an engine runs, the more efficient the engine is, as long as it's within reason of course.
And that's a fact :-)