Keeping DEF Flowing In Winter?

Does anyone have any tips for making sure the DEF does not freeze up in the winter? I know the tank has a heater that is supposed to keep the tank from freezing up but am I supposed to trust that is good enough? With fuel you can add anti gelling treatments but DEF being what it is I have not heard or seeing anything that can be added to keep it from freezing, just wondering what others do to prevent their DEF from freezing?

You don't add anything. The tank heater will keep it from freezing and I've run when it's been -25° across South and North Dakota and Montana. It never had any issues.

Laura

Does anyone have any tips for making sure the DEF does not freeze up in the winter? I know the tank has a heater that is supposed to keep the tank from freezing up but am I supposed to trust that is good enough? With fuel you can add anti gelling treatments but DEF being what it is I have not heard or seeing anything that can be added to keep it from freezing, just wondering what others do to prevent their DEF from freezing?

Don't sit for too long. Idle periodically. Are there other means? I suppose someone may enlighten us.

You don’t need anything as Laura mentioned. Living in western Minnesota and working through the winter in the coldest parts of the country, I’ve yet to have an issue. Fun fact, DEF contains urea and urea is also used as a de icer at airports and extensively by the Air Force due to the fact that it doesn’t corrode the structure of the aircraft.

Does anyone have any tips for making sure the DEF does not freeze up in the winter? I know the tank has a heater that is supposed to keep the tank from freezing up but am I supposed to trust that is good enough? With fuel you can add anti gelling treatments but DEF being what it is I have not heard or seeing anything that can be added to keep it from freezing, just wondering what others do to prevent their DEF from freezing?

Don't sit for too long. Idle periodically. Are there other means? I suppose someone may enlighten us.

Ryan, you complain about being on moderation but your advice above, which actually made it through moderation, is just plain wrong.

If you want to be taken seriously, then contribute to the forum in a productive and practical way.

Thanks lady and gentlemen for the replies. I will just keep adding it from the fueling station and trust in the heating system.

I've been driving for 5 years and have never experienced the Def system freezing up. Periodically I've come across pumps that have issues when it gets real cold so make sure you don't run it anywhere near empty or it'll cost a lot more (and P.I.T.A.) getting the 2 1/2 gallon jugs to fill your tank.

Excellent Question.

There are a couple things you can do. First, keep the tank full. Keeping the tank full makes the heater more efficient. Second, when you are going to be away from your truck for a reset or home time and you expect temps to below 17F, do not turn the master power off. Turning off master will turn off the heater. If your truck has a plug in for 120v truck power plug it in. Not talking about engine heater plug, but if its super cold plug that in to.

Does anyone have any tips for making sure the DEF does not freeze up in the winter? I know the tank has a heater that is supposed to keep the tank from freezing up but am I supposed to trust that is good enough? With fuel you can add anti gelling treatments but DEF being what it is I have not heard or seeing anything that can be added to keep it from freezing, just wondering what others do to prevent their DEF from freezing?