Mitsubish MZ314528 (sorry, I don't have a link...)
ZeroStart 3100111 - it's what I'm using.
1. I plug mine in roughly 90 minutes before I leave for work. Any more is a waste of electricity as the motor won't get much hotter.
2. I use mine year-round.
3. I would also consider/recommend an oil pan heater pad.
I was sooo close when I had my loaned Mirage from Mitsu... Sadly, just not quite there. 49.0 mpg.
View my fuel log 2015 Mirage DE 1.2 manual: 44.5 mpg (US) ... 18.9 km/L ... 5.3 L/100 km ... 53.4 mpg (Imp)
I've gotten over 50 on a tank many times, but my lifetime average so far is 48.1 according to fuelly. My best tank was 55.4mpg, which I achieved when taking the scenic route home from Missouri. I usually try to drive 55mph unless I'm on a long trip, then I'll go 70, but I had time and purposely tried for that one! My Mirage is too precious to drive in winter yet so I don't have that working against my average.
View my fuel log 2015 Mirage DE 1.2 manual: 48.4 mpg (US) ... 20.6 km/L ... 4.9 L/100 km ... 58.2 mpg (Imp)