Dodge Cummins Diesel Forum - View Single Post - DEF fluid gauge accuracy
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post #1 of (permalink) Old 08-20-2019, 03:22 PM Thread Starter
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DEF fluid gauge accuracy

18' 3500 here. My def gauge was at 75% full. I added 2.5gal thinking that would almost top it off but it was spilling over once I was at about 2.2gal. I thought the total tank was 5 gal and the gauge was at 2.5gal or less? Any help would be greatly appreciated.

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