Block heaters are usefull starting at about -10 C for helping your engine warm up faster. Sure it will start without it, but the faster you hit operating temp, the faster the computer will stop enriching the fuel/air mix. Translation....it saves you gas. Rule of thumb: plug the vehicle in 1 hour for every 10 celcius below zero. It hit -37 C here in Winnipeg last night so this comes from experience.
96LX/24V/ATX/Midnight Red/A4 repeaters/SVT exhaust/KKM/65mm throttlebody/SVTsprings and ST200 struts/SE rockers and BAT spoiler/BAT 19mm swaybar/urethane bushings/Kenwood 7 speaker syst./E1 SVT brakes w Powerslot rotors/9005 lowbeams/885 fogs/50% tint/Michelin XM+S 130's for winter/E1's with gForces for summer...and now "New Paint!!"
87 Renault GTA convertible/2.0l/mtx/Sony sound/otherwise stock
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