About block heaters. The stock block heater only helps a little. I'm going to change mine out (both cars) for circulating tank heaters that are at least 1,000W. I'll probably go for 2,000W heaters though since I have a 20A outlet. I've used that's kinds of heaters on other small cars with excelente results. I also might use a 1,500W block heater and a 500W heater of some sort to heat the traction battery.
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