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Best Oil For 2.5tdi Bau Engine?

Discussion in 'A6/S6/Allroad forum (C5 Chassis)' started by rhys084, Aug 21, 2014.

  1. rhys084
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    rhys084 Member

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    [Aug 21, 2014]
    Getting the car serviced and thinking of going for a 507.00 long life oil, but still changing it every 10,000 miles.
    Is this the best option or am i overlooking a better option.

    So in short which oil type and which brand?
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  2. Gazwould
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    Gazwould Well-Known Member

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    [Aug 21, 2014]
    507.00 perfect, 10k or less.
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  3. rhys084
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    rhys084 Member

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    [Aug 21, 2014]
    Any particular brand?
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  4. Gazwould
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    Gazwould Well-Known Member

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    [Aug 21, 2014]
    Most stick with Quantum or Castrol Edge.

    There's some incredibly cheap 504. 00/ 507. 00 cheap on ebay
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  5. rhys084
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    rhys084 Member

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  6. adamss24
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    adamss24 Well-Known Member

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    [Aug 21, 2014]
    Stick to a decent 505.01 in 5w40 flavour, fully synthetic as well...
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  7. rhys084
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    rhys084 Member

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    [Aug 21, 2014]
    What are the benefits of a 505.01 5w40 over the 507.00 5w30?
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  8. Gazwould
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    Gazwould Well-Known Member

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    [Aug 21, 2014]
    Why a 505.01 5w 40 , Chris ?
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  9. adamss24
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    adamss24 Well-Known Member

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    [Aug 21, 2014]
    Because the 507 spec oil is piss thin at 100 Celsius and it's only beneficial to newer cars fitted with a DPF due to low ash content...5w40 is a better choice and stops cam wear ...
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  10. Gazwould
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    Gazwould Well-Known Member

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    [Aug 22, 2014]
    Normally I would agree 5w 40 v 5w 30 of the same quality at 100°c is no competition.

    But the 5w 30 LongLife 507.00 is a higher quality oil as it was designed to last longer. A higher additive package gives it better lubrication , thermal stability , anti shear etc.

    It's a stronger oil. Small economy gains too.

    If people have experienced cam wear using it that would be down to the stupid LongLife 20k service interval.
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  11. adamss24
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    adamss24 Well-Known Member

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    [Aug 22, 2014]
    Trust me mate, use 5w40 oil and you won't have no trouble whatsoever... 5w30 is just a marketing ploy and no amount of additive package will save your cams from eating themselves- the dealer only specced that servicing interval due to being attractive to first time buyers- they only service the car once in their possession then they pass it on when the car is 3 years old ! Also dealer does not give a damn about 2nd hand buyers, if it brings them more work then it's all good !

    Also think about all that ash held in suspension by the thinner oil, it will clog the oil filter quicker then the bypass valve opens and all un-filtered oil is pumped trough the engine- i have never seen cars on standard servicing intervals worn more than cars on Longlife servicing...
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  12. Gazwould
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    Gazwould Well-Known Member

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    [Aug 22, 2014]
    Still not convinced as I'm blaming the 20k service interval. The best opinion would be from Opie Oils
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  13. rhys084
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    rhys084 Member

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    [Aug 22, 2014]
    hmmm what a surprise a difference of opinion on t'internet. :distrust:
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  14. rhys084
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    [Aug 23, 2014]
    Ok so on a bit of further research i think adams24's idea is the best. The car doesn't have a DPF so 507.00 doesn't seem a must and the extra viscosity of the 5w40 would seem beneficial and might even lead to a slightly more refined sounding engine.
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  15. Gazwould
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    Gazwould Well-Known Member

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    [Aug 23, 2014]
    Do more research.

    507 00 is the higher quality oil and less likely to break down.

    A lesser quality can become a 30 or 20 at high temps.

    Small power/torque and mpg gains with 5w 30.

    507 00 is the highest quality oil spec.

    508 00 is designated but yet to be produced or speced.
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  16. adamss24
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    adamss24 Well-Known Member

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    [Aug 23, 2014]
    Instead of looking at oil specs, i WILL look for a high zinc content oil and with the right weight, piss thin oils will do no good regardless of how good the additive package is ! A tri-ester fully synthetic oil is to be desired and not some claims to "meet" the 507 Vw spec/requirement... Highly strung engines don't require 0w30 oils but 10w60 fully synthetic tri ester oils... You put what you like in yours, cannot change your mind !
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  17. Gazwould
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    Gazwould Well-Known Member

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    [Aug 23, 2014]
    I agree , 5w 30 507 00 in my VAG daily.

    And 15w 50 in my S14.
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  18. rhys084
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    [Aug 24, 2014]
    Maybe I'll just put 507.00 & 505.01 in 50:50 to hedge my bets!!:)
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  19. Gazwould
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    Gazwould Well-Known Member

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    [Oct 7, 2014]
    Web performance overlays for

    5w 40 505.01
    0w 30 506.01
    5w 30 507.00

    As you can see the latter out performs the rest filling more of the web.

    2014-09-23 16.57.49.jpg
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