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Your thoughts, fuel related.

QuattroCalum Dec 23, 2017

  1. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Reading this article online and one part which says running low on your tank can damage the fuel filter and fuel pump.
    Maybe years ago when cars had metal fuel tanks there could be debris in there but now most/all cars have plastic fuel tanks so very little chance of there being debris in there. Even if there was the fuel filter would catch it, that’s it’s purpose and it certainly wouldn’t damage the filter unless there was an unprecedented amount of debris in the bottom of the tank. It shouldn’t damage the fuel pump, poor reporting or scare mongering or maybe just a slow day at the press?


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  3. martin1984

    martin1984 Well-Known Member Team Silver TDi Audi A4 Audi Avant Owner Group

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    Ive let mine run almost empty 06 tdi with out problem on a few occasions to flysh redex through my system so yea in car these day i dont think there any real concern abiut corrosion within the tank.

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    DieselJake likes this.
  4. DieselJake

    DieselJake Well-Known Member VCDS Map User

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    Could always clean or replace the fuel tank if your paranoid.
     
  5. terminator x

    terminator x Well-Known Member

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    I often let mine run down to 5m on the range then fill up. I'm always getting told by the other half that it will damage the car! Not personally seen any problems doing that on any car that I've owned.

    TX.

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  6. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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  7. Retroman

    Retroman Audi A3 2010 Sportback 2.0 TDI 170 (CBBB engine)

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    Not sure about tanks having lots of debris in the bottom - the fuel filter would deal with this anyway. There is a possible issue with running HPFPs on diesels as these are self-lubricated by the diesel fuel itself - for the same reason people get worried about changing the fuel filter and not first priming the system via VCDS. Also my understanding is that a lot of modern diesels with DPFs won't do an "activated regen" when the tank fuel level is below 25%, so running around urban areas with a perpetually low fuel tank could cause DPF issues.
     
  8. HalNutt

    HalNutt Member

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    Having a low tank gives more surface area for condensation hence water in your fuel


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  9. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Hmmm.... do I remember that name from UK Passats Halnutt??
     
  10. HalNutt

    HalNutt Member

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    Never had one. Only owned an A4 1.8t for 6-8mo. Thinking of lookin for another.


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  11. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    My mistake, another B6?


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