In my opinion, this discussion comes down to this.
It is not required to plug in the block heater for a diesel engine.
As some have attested to, the diesel engine will start even if left outside in zero degrees weather.
As the manual states, it
may be beneficial to plug it in when certain conditions are present.
For me, it is definitely beneficial to do so for the ease of starting and to minimize the wear and tear on the engine, when the conditions are near or at the zero degree mark and especially when the truck is kept outside in those conditions.
Personally, I try to take care of my equipment, within reason, the best I can. If plugging in the block heater will prolong the life and service of my diesel engine, I certainly would want do that. These recent model trucks cost to much to replace to not to take care of them.
Just my opinion on what I've read on this topic.
Gary & Carole
