Hi.. Is it necessary to have a block heater in my 2016 diesel. I live in co. So we do have cold winters. My old 2004 diesel had a block and made starting easy... Jim2007
They dont get hard to start until around -30 or so. Even then, the grid heater will get it going but may run a bit rough. So it might not be needed but it does help to get the heat flowing sooner. Where you live, I would get it and use it just for the faster heat.