heat...
My 6.2 had a factory freeze plug heater,but evidently the junkyard that cut the motor in it out of another parts truck, just snipped the 110V cord off about a foot away from the heater!..but someone had installed a heater that goes into one of the heater hoses that works,luckily..
I've only plugged it in a few times during sub-zero nights ,and dont think its wattage is sufficient enough..the motor starts with or without it on,but sounds horrible the first few moments after its been started without the heater being on for awhile..(as does any diesel that has sat overnight in low temps!)..my tank style heater hose heater is only about a 400 watt version..
I'm hoping that factory freeze plug heater never leaks --looks like a bitch
to get at,and remove/install..

--I have enough woes under there,with my oil pan rotted and weeping,and all the oil cooler hoses and tranny lines looking like barnacles are growing on them..
I know they call them "freeze plugs" --but in my experience,blocks usually crack before a freeze plug gets pushed out,if it gets cold enough to freeze water in the engine..I've been told they were installed to plug the sand casting holes when the block was poured out of molten iron...makes sense to me,and explains why I often find sand in the block under where the freeze plugs go...only a few times have I seen freeze plugs pop out after a motor feezes,and have no block or head damage..so CHECK YOUR ANTI_FREEZE!..
