In trying to be proactive before the winter comes, I had a coolant heater installed in my car yesterday. Basically it was installed into one of my coolant hoses.
What would be the advantages/disadvantages between this and a block heater that actually heats up the oil pan?
It seemed to slip my mind when I bought it, so if someone could give me a quick description of how this heater that sits and recirculates the coolant works.
Thanks