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I like to keep it above half way. I also fill at truck stops, but this past winter our DEF froze up coming back from Quartzite (-13) in Wyoming. The service tech said they have found water in some of the DEF from the pump. From now on, especially in cold weather, I will use the jugs.
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Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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