I posted this on the "-20f thread" this morning. Since it seems we have two threads going on a similar topic, I thought I'd post it here too. Here's the text as copied from the afore mentioned thread...
Btw, for those using the metric system, this was a -26C (-15F) cold start...
** Beginning of copied info**. So here's the video I promised I'd post. According to the car the temp was -15F, according to the NOAA website, which I checked a few minutes after starting the car the temp was -18F in town, a nominal difference.
The car had been sitting since Saturday. Highs since the last drive on Saturday morning were in the low single digits, and according to the charts, the coldest during the period it sat was -22F. Sorry for the poor audio and the unscripted commentary
I have been running 6 oz of PS (White Bottle) per tank, only for the extra insurance against gelling in these very cold temps as of late. If we do drop into the -20's and I have a chance, I'll do it again. So far this season the coldest start was -26F, but I did not get that on video. The start at that temp was very similar.
http://www.youtube.com/watch?v=bljarWxif2Y
"not too shabby"