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I replaced my factory 76.5°c thermostat with the 82°c unit from Nissan.
I drained about 2L of coolant from the bottom of the radiator and that was enough to clear the thermostat housing.
On removal of the old 76.5 it appeared to be damaged.
The bottom looked bent and there was a scuff/indent on the base.
I'm not sure if it was having an effect on the temperatures.
Here it is in February this year on a day that was about 30°c, stationary, and it was sitting around 72°c.
Old thermostat.
New one.
I'll see how the new 82c one goes over summer as the weather warms up here in Vic.
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