Interesting that one person reported that car with old radiator ran at 110, when new radiator put in went to 85

Maybe there is crud in the passages in yours and a new one would help.

24 years and 196,000 miles is a lot if yours is the original radiator.

Unless yours was replaced sometime along the way. Difficult to tell without records, another reason for you to try and get them

thread and discussion here
How Long Will a Radiator Last - With proper service

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)