I thought facelift should be 6.5 instead of calling 6.1, no ?

Yes it does, but within the multitudes of lights and displays at the meter panel, who would notice a red LED coming on? By that time, it will be too late.
Thats the only thing I truly hated about the GM6 City. No engine temperature gauge, instead they have a rather useless ambient temperature display.

But anyways, thanks for sharing on the blue light ON time. That will be pretty much the same for my CFL to heat up to optimum temps.

Call me a traditionalist but i am more assured of seeing the rise and fall of temperature conditions instead of looking out for that red light. Or even a digital temperature display to show how hot it is currently. Oh well, to each their own i guess.

Did those net 'advice' come with tested results or empirical evidence? Did they provide those scenarios where you can try ownself and confirm their findings? Did they show proof or provide verifiable theorem on the increase of carbon build up? Did they even explain how ECON mode functions and why its bad?

"A sporty drive will cause less carbon buildup in engine".
Well, yes and no. In the ol' days when engines were less refined and fuels were more dirty, carbon does buildup quicker inside engine. A burst of hi speed runs can remove much of the carbon buildup althou a top overhaul is still recommended to truly remove all the hardened substance.

But with modern cars and better quality fuel nowadays, a sporty drive no longer brings much benefits to clean the engine. Carbon will take a very very long time to buildup (and i'm talking years here). You can do better to pump in RON97/Red Vpower/RON100 once per month and get better results from the cleaning agents in these fuels. All them are Euro4 level, so the cleaning power is much better.

Of cuz, a sporty drive once in a while never hurts anyone