They might have put a new thermostat in too. A new thermostat is set to start opening at 87C and be fully open at 102C, so 90C while driving and around 100C at idle is where it should be.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record