I personally wouldn't panic about it running that temp. Give it a good italian tune up occasionally I would also see if you can get an after market thermo that runs a little hotter if you are really concerned.

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My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory