Keep in mind it has a shelf life. Around 1 year in the proper room temperature it's stored in if I remember correctly.It's funny... our local tractor dealership (I work for them) sells it for $1.70/gal... The truck stop down the road is at $2.88 per gal. Only difference is I have to have my own container for the dealership to pump into... Think I'll be buying 5 gallons at a time, just to have some extra with me in the back of the truck!
I would assume. I've never payed attention to be honest. I usually just buy a jug and poor it in.Do they date stamp it ? or give an expiration on the container ?
The critical variable regarding DEF shelf life is the ambient average temperature. The following information is provided by Ford Motor Company:
Average ambient temperature is less than or equal to 50 degrees F / Shelf life is 36 months
Average ambient temperature is less than or equal to 77 degrees F / Shelf life is 18 months
Average ambient temperature is less than or equal to 86 degrees F / Shelf life is 12 months
Average ambient temperature is less than or equal to 95 degrees F / Shelf life is 6 months
Average ambient temperature is less than or equal to 104 degrees F / Shelf life is 2 months.
For example, the average ambient temperature here in Myrtle Beach, SC is 64 degrees. That should equate to a DEF shelf life or approximately 24 months.
You can Google your location to find the average yearly ambient temperature. Hope this helps.
I hope that shelf life chart is rounding down because I'm certain more than 50% of owners in the south don't go through a tank of DEF every 6 months...I need to refill about every oil change (10k miles), that means that my truck is driving around with expired DEF in it most of the time.