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      11-18-2019, 11:20 AM   #34
tcubed
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Drives: 335d Stage 2 JR, 328d Stock
Join Date: Feb 2015
Location: S. Florida

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Quote:
Originally Posted by FaRKle! View Post
I've been Kerma-tuned for 6,660mi now and haven't observed a DEF usage nearly as high as yours.

The DEF system (passive plus active tanks) has a capacity of 18.1L. My DEF/1000mi light comes on when I'm at 3L remaining. When the first light came on after the Kerma tune I put in 12L (VW 10L jug + VW 2L bottle). My light came on again after about 5000mi. The next time I decided to completely top off the system to see how much it would take, and got 15L in there before things started spilling out. Thus my DEF consumption rate is ~400mi/L, or 6000mi before the DEF light comes on again.

How much DEF are you putting in when you fill it? BTW my driving during this period also included track time.
Interesting, I thought i was filling it full however i must not be. I would guess i am getting about 6 L into it before it starts spilling out. I must be doing it wrong.

Last edited by tcubed; 11-18-2019 at 11:29 AM..
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