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Mar 20, 2023 | 10:34 AM

#16

Adidasunt8

5th Wheeling

Joined: Feb 2018

Posts: 27

Likes: 2

Quote:

Originally Posted by JoeUser

Takes a very long time to use up DEF in my '20. Even with stop and go non-highway driving. Last time I filled up with DEF the gauge said that I was good for 6K miles. So, not unusual.

Ahh thank you for that feedback. I recall some people saying the 2020+ go through def much faster than the 17-19. I hadn't seen mine move at all in 500 miles or so. Thank you for confirming that.

Mar 20, 2023 | 11:04 AM

#17

JoeUser

Fleet Mechanic

Joined: Oct 2022

Posts: 1,821

Likes: 896

From: Dallas Metroplex

Quote:

Originally Posted by Adidasunt8

Ahh thank you for that feedback. I recall some people saying the 2020+ go through def much faster than the 17-19. I hadn't seen mine move at all in 500 miles or so. Thank you for confirming that.

It ultimately depends upon how you drive, or if you tow a lot versus not. Your best bet is just to check it ever so often, as you may or may not use up DEF as others do. Every situation/driver is different.