Head Bolt Heater?

[The Sunde's]

I have a 2006 Journey with a cat 350. It has a engine heater for cold weather starting. My question is: How does the heater work? (What is it heating?). Is there any problem turning it on for long periods? (Such as all night long).
Thanks for the info.

[The Sunde's]

I have a 2006 Journey with a cat 350. It has a engine heater for cold weather starting. My question is: How does the heater work? (What is it heating?). Is there any problem turning it on for long periods? (Such as all night long).
Thanks for the info.

[rharveysr]

The block heater heats the engine coolant. There is a heating element that in installed in the coolant passage. You can leave it on all night and it will not hurt a thing. You could leave it on longer if you want. All its doing is keeping the engine warm via the engine cooling system. I have a Dodge Cummins that I drive everyday and also we use it to pull our rv..and I plug it in at night so that its nice and warm the next morning...

Rick

[The Sunde's]

Rick,
Thanks for the info, I like the idea of leaving it on at night when you plan to start the next day in cold weather.