Question about cold weather driving and transmission temperature

[Dory]

I have not even had my 2015 gt for a week, but I have a question about the warming up process. I have noticed starting yesterday that if I watch the gauge for trans temp that it does not enter the green area until about 20 or 25 minutes into my drive. Temps have been around 30-45 when I have been watching it. My work commute is about 25 minutes long and the first day I did not look at the gauge and started driving moderately hard 15 mins in. Is it not safe to go past 2.5 or 3K until this gauge is in the green? Thanks.

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[Lime1GT]

Nothing to worry about. Transmission temp gauges were generally used for towing purpose to check more for overheating than cold. The transmission fluid is cooled, when hot, by a separate cooler built into the radiator and also an added external cooler if option is available. The coolant in the rad surrounds the trans cooler tubes and helps to warm the transmission fluid in cold temps. The rad coolant also cools the transmission fluid to operating temperature in hot temps. The auxiliary cooler only cools the trans temps by airflow over the fins. So if it's really cold outside the trans won't heat to operating temps until the engine heats the rad coolant and/or the transmission is worked really hard.

Why would you think it's not safe to go past 3K? Is it suggested in the owners manual or just someone's opinion? In severe winter temps I let the engine gauge come up a bit before working the engine too hard but the rad won't see operating temps until the engine thermostat opens at 192*. It takes a while to get that temp at -30F. The trans will warm itself at those temps.