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Hi Ravi, you do not need to worry about cold winter temperatures. The Insight copes just fine like other cars would.
It is true that the 12V battery is weak - it needs monitoring, but if you replace it when it can no longer stay above 11.5 Volt in winter you will not run into trouble (I needed to replace mine once - but 12V batteries are cheap, and I got it under warranty - another mediocre Honda 12V battery. But it still holds and it was free to me).
When it gets really cold it does pay to have thin oil (0W20, or even better Honda Green Oil). On Green Oil I saw the winter 'penalty' on economy get less severe; in fact last winter my fuel economy was on par with my lifetime average, despite some mild frost and storms and the like. In previous winters on regular oil I had far worse economy, even in the very mild 2014 winter.
Once the engine warms up there is little difference in economy between the oil makes.
It is true that the 12V battery is weak - it needs monitoring, but if you replace it when it can no longer stay above 11.5 Volt in winter you will not run into trouble (I needed to replace mine once - but 12V batteries are cheap, and I got it under warranty - another mediocre Honda 12V battery. But it still holds and it was free to me).
When it gets really cold it does pay to have thin oil (0W20, or even better Honda Green Oil). On Green Oil I saw the winter 'penalty' on economy get less severe; in fact last winter my fuel economy was on par with my lifetime average, despite some mild frost and storms and the like. In previous winters on regular oil I had far worse economy, even in the very mild 2014 winter.
Once the engine warms up there is little difference in economy between the oil makes.
