I would not have one simply because they are next to impossible to start when the actual temperature is 30 degrees below zero without being preheated by a block heater or garage. If you do get one going, they will bang and clatter until warm, which I don’t think is a good thing.
Do you live in an area that goes below 30 degrees and not use a block heater? We did on both our gasoline trucks while living in Alaska.
I've had one..and only one...experience with *real* cold.The facts...central Quebec (well north of Montreal),January 2011.Spent a night in a small town there.The forecast was for *really* cold temps that night.Arrived in town at about 6PM with my diesel's tank just about empty.Went to a nearby Shell station to fill up (filled to the top).Shut the car down for the night at about 6:30,the temperature reading on my dash was -10F.Fourteen hours later,temp -31F,my diesel started like a champ.No heaters,no boosters,no garage.Just a tankfull of "local" diesel.
I kid you not.I must admit that I was stunned by how easily it started and I'll admit that for the first 20 miles or so the car ran like,and felt like,a Mack truck.But my guess is that a gas car would have been the same (although I can't be sure).