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Should I change my def?


Lance A Lott

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The def that's in my tank is from when I drove it home last April. I have no way to know how old what was in the tank was when I Picked up the truck. When I started it up a week or so ago to take it out of the garage it was showing nox codes. I was wondering if it was advisable to start with fresh def.

 

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When in doubt, just do it.  Is there a drain on the bottom of the tank?  Death Juice is cheap.  The stuff in my tank is about 8 months old but I'm not getting any codes.  But, I only drive mine bout once a month.  Maybe someone more knowledgeable will chime in.

2002 Fifth Avenue RV (RIP) 2015 Ram 3500 Mega-cab DRW(38k miles), 6.7L Cummins Diesel, A668RFE, 3.73, 14,000 GVWR, 5,630 Payload, 27,300 GCWR, 18,460 Max Trailer Weight Rating(For Sale) , living in the frigid north, ND.

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