1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Mixing Engine Oils

Discussion in 'A3/S3 Forum (8L Chassis)' started by imported_Strider81, Jun 5, 2005.

  1. imported_Strider81
    Offline

    imported_Strider81 Guest


    Half way up the M1 my oil light went on (my fault should have checked b4 i left) so i stopped at the nearest and most dearest service station only to find they had one type of oil.

    rather than risk it i poured a little of this Castrol GTX Magnatec in to keep the ess happy- however I know this is not the optimum oil and so will it be harmfull in anyway to top it up fully with the recomended 503.01 spec?

    thanks
    #1
  2. Offline

    Guest

    I am no expert in oil and i am sure someone is but i very much doubt you will have caused any problem by putting some GTX in. More problems would have arisen had you not put anything in!
    #2
  3. imported_gek
    Offline

    imported_gek Guest

    Up to 1/2 a litre of a substitute oil is ok in emergencies I think.
    #3
  4. imported_monkeytrousers
    Offline

    imported_monkeytrousers Guest

    Yep, gek is spot on. I had the same thing happen on the M6 and I phoned Audi Roadside Assistance who said up to half a litre of any synthetic oil was OK in emergencies.

    Not sure what the code is for the proper stuff, but I know Mobil 1 is it!
    #4
  5. imported_Strider81
    Offline

    imported_Strider81 Guest

  6. WilkoS3
    Offline

    WilkoS3 Member

    Joined:
    Dec 5, 2004
    Messages:
    163
    Likes Received:
    1
    I have done this the other way around. I have SLX in the engine and have topped up with Mobil1 as you say they are both 503 01.

    I think that it's OK?
    #6
  7. CJ A4
    Offline

    CJ A4 Active Member

    Joined:
    Nov 28, 2004
    Messages:
    2,664
    Likes Received:
    0
    I hope its ok i too had mobil1 and Halfords never had any ...so had to go with the SLX longlife II seems to be ok though.
    #7
  8. Soupie69uk
    Offline

    Soupie69uk Owner

    Joined:
    Mar 10, 2004
    Messages:
    2,787
    Likes Received:
    6
    Yeah i should be fine its normally only a problem if you mix semi synthetic and fully synthetic.
    #8
  9. asifgillani
    Offline

    asifgillani Member

    Joined:
    Nov 1, 2003
    Messages:
    54
    Likes Received:
    0
    thanks for the responses - i'll top up tonight!
    #9
  10. dpeilow
    Offline

    dpeilow Member

    Joined:
    May 24, 2003
    Messages:
    95
    Likes Received:
    0
    [ QUOTE ]
    I hope its ok i too had mobil1 and Halfords never had any ...so had to go with the SLX longlife II seems to be ok though.

    [/ QUOTE ]

    Don't think you should be using SLX longlife II in the S3...
    #10
  11. neil.c
    Offline

    neil.c Senior

    Joined:
    Apr 9, 2004
    Messages:
    566
    Likes Received:
    1
    Any oil is better than no oil, if the light comes on then you are not that far away from engine faliure, best to keep the levels topped up.
    #11
  12. dummi
    Offline

    dummi smoking a6

    Joined:
    Mar 25, 2004
    Messages:
    1,210
    Likes Received:
    0
    as soupie says don't mix semi with full synthetic, you will get away with it
    #12
  13. imported_oilman
    Offline

    imported_oilman Guest

    VW 503.01 is the code.

    SLX carries this not SLX II.

    Others are Mobil1 0w-40, Castrol RS 0w-40, Fuchs Titan Supersyn SL 0w-30 and Motul 8100 0w-40.

    Cheers
    Simon
    #13
  14. god_thats_quick
    Offline

    god_thats_quick Numptie of the highest order

    Joined:
    Jun 1, 2004
    Messages:
    2,507
    Likes Received:
    1
    Hi Simon,

    Guessing your the same company that posts on Pistonheads - great advise by the way!

    How much is the Motul 8100 0w-40 in say 5Litre quantities?

    Cheers,

    Ben.
    #14

Share This Page