Diesel Dye

Discussion in 'Audi Q5, Q7, Touareg TDI, Porsche Cayenne forum' started by JRF, Nov 24, 2015.

  1. JRF

    JRF New Member

    Joined:
    Nov 12, 2015
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    Car:
    2010 audi q7
    Location:
    New Jersey
    Hello Forum,
    Does anyone out there has any experience in using diesel dye to locate an elusive potential fuel leak?
    Thanking you in advance for your feed back
    Best
    JFR
     
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  2. chittychittybangbang

    chittychittybangbang Administrator

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    Car:
    2006 Jetta TDI
    Location:
    CT
    Also look for dirt stains, the dirt tends to collect around the leak and stick to it.
     
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  3. Sparkn

    Sparkn Member

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    Car:
    2014 Jetta TDI
    Location:
    Illinois
    You need a UV light to go with it. You will get dye in the oil naturally. Only be concerned if the oil level rises unexpectedly. Be concerned of it migrates to the radiator fluid. I don't generally use dye in the fuel, because, like Chitty said, it almost always manifests as a dirt spot or leaves a varnish stain. The dye just helps you look at hidden areas.
     
  4. JRF

    JRF New Member

    Joined:
    Nov 12, 2015
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    Car:
    2010 audi q7
    Location:
    New Jersey
    Thank you all.
    The smell has diminished considerably. I almost forgot about it.
    I will keep looking for any greasy/dirty spots though
    I don't know if I told you guys the truck(do we want to think of Q7's as trucks?: I don't want to offend any purist,LOL) passed the emissions inspection after I drove the 500 miles, just as they told me it would.
     
  5. xeno555

    xeno555 Well-Known Member

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    Car:
    2012 TDI Tech Package 6mt
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    Mile High
    Mods:
    Malone Stage II. Rawtek 3" from Turbo to Tail. Slammed on Koni. TSW Nurmburg Rims. Whiteline Sway & Ends. Panzer Plate.
    If your going to look at every fitting for color leak, then you can just as easily do a physical inspection.

    You might not be smelling it, because the rubber might be swelling up.
     

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