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Does anyones Diesel oil run golden?

Discussion in 'General Automotive Chat' started by RobMorris, Mar 21, 2013.

  1. RobMorris

    RobMorris Member

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    Chaps

    I recently bought a Diesel A4.

    The oil in the engine was like crude oil which I quickly replaced with 5/40 fully syn + filter.
    Although I poured in golden oil it was instantly black and mucky on checking the dip stick..

    3 weeks + 1000 miles later I have just done another oil change.

    I instantly checked the dip stick and it was golden until I drove the car and its black again.

    Have I so much crud in the engine that I need to do a few changes to run golden or being a Diesel engine it just will never run golden!?

    Cheers
     
  2. hades-

    hades- Yorkshire & Humber Rep.
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    it always goes black in the diesels
    iv noticed it aswell
     
  3. Rom

    Rom Member
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    Welcome to diesel's!

    They will only ever run golden when new, or maybe after an extensive rebuild.

    We had a customer bring a Yaris back as it had no oil in. It had plenty, but was new, so was still golden.
     
  4. AlexGSi2000

    AlexGSi2000 Well-Known Member
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    When I first got my 2.5TDi (just over a year ago) I changed the oil - like you said it was black within minutes of driving.

    Since then I have carried out 8 oil changes - yes, 8.

    The oil runs golden for about 70 miles now before it turns black.
     
  5. RobMorris

    RobMorris Member

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    8 changes LOL!

    OK I guess I with have to live with black oil then...

    Thanks!
     
  6. ShaunS3

    ShaunS3 Yorkshire & Humber Rep.
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    The reason why diesel oil goes black quicker than petrol engines is due to its cleansing properties. It cleans an lubricates the engine, similar to what v-power fuel will do for the fuel system.

    I ran some of this on my old car as a flushing/cleansing oil before putting the good stuff in, plus it was a little thicker and quietened down my noisy tappets :)
     
  7. @udi A3

    @udi A3 Site Sponsor
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    8 oil changes to make the oil run golden?! MADNESS!
    Generally you can feel the clean oil in a desel after a change, but they all go black right away, had a few cusomers complain we hadnt actually changed there oil after services when i worked in a garage. We always offered to change it again in front of them but they would have to pay again when we proved this to be the case!
     
  8. _G_

    _G_ Active Member

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    the oil is doing its job. just because it has changed colour does not mean it has lost its properties.
    I can put in honey syrup colour oil into my audi a3 2.0 tfsi and even after a good oil flush and extra oil change it will go darker within 100 miles. Not a bad thing. I had it lab tested and it was still good oil... no problems with thermal flash point, no excess acids/break down etc.
     
  9. jojo

    jojo Looking for Boost!
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    Goes black almost immediately after you start it up, sounds normal to me.
     

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