engine heaters

The bottom line is that they are a small tank with an electric heater inside that circulate heated coolant through the engine block by thermosyphon action. (Read that "hot stuff rises".)

You plumb the heater so the bottom line connects to the bottom of the water jacket (usually the drain plug tapping), and the top "outlet" line connects to a tapping in the head, or the upper water fitting area, below the thermostat.

The heater heats the coolant, and the heated coolant rises to the upper engine area, and is replaced by cold coolant from the bottom of the block. As this flow of heated coolant continues for a couple of hours, the engine block is toasty warm.

The link below is to Phillips-Temro, one of the largest makers of engine heaters. It takes a little time to drill down through the menus, but there's a wealth of heater information there.

• Heater stuff

Fred

Those big suckers would be WAY overkill for a 2010.

You'll be surprised how quick just the ordinary tank heater will warm the engine. It will circulate more than you think!

Go to the Temro site, and click on the "data sheets" button, and you can look at the circulation/tank heaters.

I have a 4020 with a plain 1000 Watt tank heater, and it's warm enough to start in a couple of hours at -20.

A 750 Watt unit would likely be more than enough for the 2010.

If it's real cold, and it's outside in the wind, throwing at tarp over the hood and grille area will help it heat up a lot faster.