100 C is good to go. 60 is too cool. Replace thermostat. It is bad. Of this I am certain.

As for the fan, it's probably good. You'd probably be seeing an overheating issue in traffic if it wasn't. 100 C isn't anywhere close to overheating.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.