Quote:
Originally Posted by 84300DT
you only need to heat the block heater for about 3 hours before starting the engine in sub freezing ambient temps.
no need to leave it on all night...
waste of electricity.
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I agree that it's only needed for a few hours, but my point was that the energy cost is negligible. Plugging it in probably saves more than $0.50 of fuel when you start it cold. I only plug mine in a few nights per year (when it's going to be below about 10 F), I've never bothered to buy a timer.