I am going to Pittsburg, PA the last two weeks in December. It is going to be very cold there. I do not believe my 2004.5 Ram 3500 truck has a block heater in it. The information spec sheet says my truck comes with a cold start capability, to allow easy starts at-20 degrees below 0 without an engine block heater. How is this possible? Should I buy a block heater?

 

You have a block heater already, you just need the cord that connects to it. It's about 26 bucks a cummins. The dodge one is more expensive because it has the factory plastic anchors at around 46 bucks. Do a search, you should find an install thread somewhere. Block heater is behind the oil filter. It will have a black plastic cap covering it from what I remember.

 

you do not need the block heater, you do not even need the grid heaters, the truck will start just fine at 20* below zero

 

Yes your truck will start at -20, but you will need really good batteries and without it being plugged in, its hard on the motor. Spend a few dollars and go buy the plug. Also, when you plug in, make sure its plugged in for at least 6 hours. Big motor and it takes time to warm up. You might want to invest in a winter front as well.

 

It's better for engine if you plug it in below zero. I plug mine in below 20°F. It's nice to have instant heat when I start driving. Otherwise you have to wait until it warms up- which could be never if you don't have something to block the air going through the radiator, if it's cold enough. I'd get the cord if I were you for that reason alone.

 

I'd plug it in just for quicker heat. You don't need it, but it'll take the load off your batteries. Grab a cord and hook it up so at least you have the option.

I use the block heater here in DFW now and again (don't laugh Yankees), particularly if I have a short trip.

 

Same here. I actually start plugging mine in when the temps get to about 35° at night. Easier on batteries and instant heat when I start driving!

 

Geno's Garage Online has the best price I've ever seen on the cord. Takes a minute or two to install.

 

Same here. Why make it harder on the engine when I don't have too.

 

If you need an oil change before then, maybe think about 5W40 or better yet 0W40. Same high temp protection, quicker flow to turbo and top end. Still get the cord if it's only $20, but the thin oil will also help during the day when it's not plugged in.