Update on my cooling issue...
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Engine runs warms (around 100 to 105) in stop and go traffic, in warm weather. It runs normal (85) when there is better airflow to the engine (e.g. going 50+ km/h). The thermostat, fan clutch and radiator have been replaced within the last year (thermostat for this same issue, fan clutch because the old one was a bit worn and the radiator for a different issue). The aux cooling fans come on as they're supposed to (around 107 I think).
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Airflow through the radiator was a key issue. I cleaned out inbetween the condenser and the radiator and the engine temperature maxed out at just over 100C, maybe 101 or 102C (a/c on, stop & go city driving, 88F ambient temp). Before the cleaning, in similar conditions, it would go over 105C and drop back down after the high-speed aux fans came on.
I also tested that the low-speed aux fans come on with the A/C, which they do.
However, 100C still sounds like it's hot even in those conditions so I'm thinking of doing a coolant flush to eliminate the possibility of bad coolant mixture, air pockets, etc. Any other suggestions welcome!