Diesel Exhaust Fluid, otherwise known as automotive-grade urea, is a very stable product with a comparatively long shelf life.
Key Facts to Consider: 
- If Diesel Exhaust Fluid is kept to temperatures between 10 and 90 degrees Fahrenheit, it will last a minimum of 1 year without problems.
- Big bulk dispensers (1,000 gallons) have internal climate control systems.
- In cold temperature regions it is recommended to store Diesel Exhaust Fluid in a storage unit. In warm temperature regions it is recommended to store Diesel Exhaust Fluid in a shaded area.
- New climate control systems specifically for Diesel Exhaust Fluid are being developed.
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DEF Shelf Life & Storage
