DEF tank and winterizing
For those who have a newer diesel with a DEF tank, do you need to drain the tank for the winter? Will the DEF freeze? What would need to be done for the DEF tank when winterizing? I am getting ...
Forum Discussion
The information below is from the following website:
DEF Information
The key points from the data are:
Q. Is the 32.5% urea solution critical? A. Yes, The 32.5% urea concentration is the ideal solution as it provides the lowest freeze point. It is our understanding that all SCR systems will be calibrated to the 32.5% concentration.
Q. When will DEF freeze ? A. This 32.5% solution will begin to freeze at 12 deg F (-11 deg C). At 32.5%, both the urea and water will freeze at the same rate, ensuring that as it thaws, the fluid does not become diluted, or over concentrated. Unthawing will not cause harm to the product.
Q. How do I keep the DEF from freezing in the tank of a Truck? A. SCR systems are designed to provide heating for the DEF tank and supply lines. If DEF freezes when the vehicle is shut down, start up and normal operation of the vehicle will not be inhibited. The SCR heating system is designed to quickly return the DEF to liquid form.
Based on the information above, there are no special precautions you need to take.
DEF Information
The key points from the data are:
Q. Is the 32.5% urea solution critical? A. Yes, The 32.5% urea concentration is the ideal solution as it provides the lowest freeze point. It is our understanding that all SCR systems will be calibrated to the 32.5% concentration.
Q. When will DEF freeze ? A. This 32.5% solution will begin to freeze at 12 deg F (-11 deg C). At 32.5%, both the urea and water will freeze at the same rate, ensuring that as it thaws, the fluid does not become diluted, or over concentrated. Unthawing will not cause harm to the product.
Q. How do I keep the DEF from freezing in the tank of a Truck? A. SCR systems are designed to provide heating for the DEF tank and supply lines. If DEF freezes when the vehicle is shut down, start up and normal operation of the vehicle will not be inhibited. The SCR heating system is designed to quickly return the DEF to liquid form.
Based on the information above, there are no special precautions you need to take.
