- Jul 25, 2015
- Truck Year
Are all brands of DEF created equal ? I saw a gallon at Freds for five dollars.
The shelf life of DEF depends on ambient storage temperature. DEF will degrade over time depending on temperature and exposure to sunlight. Expectations for shelf life as defined by ISO Spec 22241-3 are the minimum expectations for shelf life when stored at constant temperatures. If stored between 10 and 90 deg F, shelf life will easily be one year. If the maximum temperature does not exceed approximately 75 deg F for an extended period of time, the shelf life will be two years.
It's usually big rig (Semi) lanes that have DEF and I feel awkward in that line with my little ecodiesel.