Do you have a engine block heater?

I would suggest downloading the Diesel supplement manual for the Ford Superduty for your year and read the Cold Weather Starting section. I understand the diesel supplement menu is now incorporated in the owners manual for 2017+ years.

2018 Ford Superduty owners maual

 

Run a quality anti gel additive to avoid fuel problems in cold weather. The block heater helps with cold starts. Not that it won't start, just that it warms the coolant and oil some so it starts quicker and warms faster by being somewhat "preheated."

Oh yeah.... and welcome to the show!

 

It will fire up immediately at those temps just like it does at 60°.

 

You should be fine as long as wherever you are coming from is already running winter blend fuel. If not, fill up when you get there. I don't run any anti-gel, nor do I plug-in here in Michigan.

 

Your truck will be fine. Mine has spent many a cold night in the mountains with out being plugged in.

If you think it will be below 0°F. add some anti gel just for precaution. Don't run Bio Diesel in the cold.
If it's really cold, I like a Full Synthetic Oil., Engine just seems to start easier.

 

 

You might consider adding a signature that includes your first name, and what your are driving....folks are pretty friendly here. Oh, and welcome!

 

Anti-Gel most likely isn't needed, but if the stations guess wrong like many did last January when we saw 0-5 temps in Oklahoma then your truck could gel. up. There are a few threads around here from that time frame with people asking how to fix a gelled up fuel system. I like to plug my truck in when it hits the 20's, not because the engine needs it but because the driver likes cabin heat sooner. I think -9 or -10 is the required plug-in temp.

 

Very very very important that you confirm that your truck does NOT have 15w-40 oil in it at those temperatures.

Either 5w40 or 10w30 would be ok from 0-15 degrees, but use 5w40 if sitting out below 0.

 

I live in Vermont, bought a 6 pack of Opti-Lube Winter fuel additive 3 years ago and still have two bottles left. I tend to use it once it gets to single digits. Drove a long trip at 5 degrees, forgot to use the anti-gel and still no problems. Just wait for the glow plug light to go out prior to cranking it. Also no need to warm it up for more than a couple of minutes and drive gently for a couple of miles.

 

I think the biggest thing you want to make sure of is that you are running the winter blend of fuel. Not sure if you live in CO but if you do I would think they are already using it. If you're in a warm weather climate and heading to CO mountains I second "filling up when you get there". I took my truck to Albany NY last year, when I got there the temperature was 5, the truck sat over night, when I got in it the next morning around 9am it was -6. The thing fired right up. That being said, I do baby my truck a bit. When the temperature is predicted to go below 15 I plug the block heater in.

 

If your truck is brand new, it has 10w30 from the factory.
15w40 would be fine down to about 10 degrees. If you were staying in cold weather permanently, depending on how cold, you may want to move to a 5w40.
The 6.7 will start darn near anywhere. They only put block heaters in if it's going to Canada or Alaska, unless you order the option. It just really doesn't need it.
I think it's appropriate in really cold weather (below zero to say 20 degrees) to run Power Service white bottle from WalMart, or Opti-Lube Winter as a better choice ordered from Amazon.

 

Most northern states get the block heater automatically. They do here in Colorado.

Motorcraft PM-23a is cheap insurance against gelling. While camping last week it got down to below zero during the night. My 6.7L had no problem starting at about 10 am. I had added PM-23a when I filled up. I probably would have been OK with PM-22a since the fuel stations _should_ be completely switched over to the winter blend fuel.