Dodge Cummins Diesel Forum - View Single Post - DEF fluid gauge accuracy
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post #10 of (permalink) Old 08-20-2019, 09:51 PM
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Originally Posted by Learjet View Post
please watch this informative video on how your DEF gauge works
Thank you Learjet, that explains it clearly. So we have approx. 3.5 gals when the gauge starts to move off of full. Good for about 3500 miles if we get 1000mpg as the video says. Ballpark range is 5500 miles per full tank of def. great information.....

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