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  1. DPF ash limit 
    #1
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    Hi,

    I need some advice.

    My DPF ash amount is reaching its limit according ELSA manual.

    Current value is 0.16L and limit is 0.175L of ash:



    Car is now on 241000km. There is no any DPF light or warning neither performance change.

    Do I need to make any cleaning of DPF or to take it out and give to specialist for cleaning or to add some aditive to fuel tank?

    Any advice is appreciated

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    Audi A6 Sedan C6 2.0 TDIe 2011 Condor Grey metallic
     
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  2. Re: DPF ash limit 
    #2
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    there is loads of stuff on the market now not sure whats what to be honest. But the wifes BM used to suffer this back when th eonly option was new - my solution was harsh but it was a BM'r - take it out of limp home and a good italian tune when cold.... later found out the actual cause was a duff thermostat not allowing the regen to kick in - no temp gauge in the BM. yea so it should regen itself, loads of speculation around this also lol half a tank of fuel above 3K rpm lol dont think its that strict the neighbors A6 is always got the fan on after he comes home for way too long - i goggled that apparently its a regen thing as it gets that hot it needs to cool off?!?!
    Stewart
    2007 A6 quattro 3.0 TDI Manual
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  3. Re: DPF ash limit 
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    Some readings made on idle before regeneration:



    And reading on idle after regeneration (40km after regeneration):



    Same readings, but on max RPM on idle:



    I have checked max differential pressure before regeneration during hard acceleration and it was 273hpa at 3556rpm. During normal driving it was going from 20 to 80hpa. I did not check how are values after regeneration but suppose that they are decreased according to values taken on idle.

    Any comment

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