I have always used truck stop DEF. I'm already there for diesel. I go inside, $xx.xx on pump #x, diesel & DEF. Pump my diesel, flip the handle, pump my DEF, collect my receipt, be on my way.
I have found that it is cheaper at the truck stop pump than the 2 1/2 gallon box. Currently, the Autozone brand is $17.49 for the 2 1/2 gallon box. That's $6.996 a gallon. Fly J's in OH hover at $4.19/gal at the pump.
One caveat, I do carry one 2 1/2 box on long trips as an emergency back up.
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ATC/NAC Jerry A. Burkholder, USN (RET.)
Rule #1. The Chief is always right.
Rule #2. When in doubt, refer to rule #1.
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