My 1997 Ford F-350 7.3 l Powerstroke diesel truck will not start when it is very cold outside. A friend told me I should plug it in to keep it warm. What does he mean?:confused:

wow!

You should have a block heater in your engine. There should be a plug that runs from it to the front of your truck. Usually can be found just around the grill of the truck. If you don't have a block heater you should get one installed.

I'm willing to bet that if you took your truck to a garage they would find the cord for you for free.