And it worked pretty good! Parked waiting to go in to a class, and had some decent heat for several minutes with the car off.
So, don't forget about the REST button this winter
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06 330i 6mt Spt- Eibach Springs, BMW Perf Susp, Supersprint Exhaust, BSW Audio
RIP-94 325i 5mt 4d- M3 springs/susp, Z3 wheels, Chipped, Intake, Exhaust= FUN!