Quote:
Originally Posted by redyaris
For this winter I have bought a 4 amp 'Inteligent' battery charger that I will mount in the engine bay and plug in with my block heater at home and work, because of EOC in the dark, morning and evening.
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My experience suggests: battery charger good. Even better when alt is disconnected. Experiment. See what works for you.
Quote:
Originally Posted by MorphDaCivic
Just wondering what is the lowest morning startup temps that would justify the hassle of adding an engine block heater?
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Well, here is a study summation cited in the wikipedia entry for "block heater":
http://www.hydro.mb.ca/your_home/hom...ck_heaters.pdf.
But more directly to your question maybe is this graph from MetroMPG's great site:
http://www.metrompg.com/zoom_image.h...20watt%20graph
It would seem to suggest a real benefit is engine warm-up time, even when starting from relative mild winter freezing temps.
And here is his data for engine warm-up and fuel consumption:
http://metrompg.com/zoom_image.htm?H...m%2Dup%20graph