hmm. upon closer inspection, my E420 never gets to 80, but rather sits at 70 deg C or so. car warms up fine, blows warm air, etc. is my thermostat also busted..?

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Current cars:
2001 MB E55 AMG
2003 Honda S2000
2000 Honda CRV

Gone but not forgotten:
2004 BMW 325i 5sp sport
1999 BMW 540i sport
1997 MB E420
1995 BMW M3 coupe