View Poll Results: What kind of engine oil are you using?

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  • Shell

    6 5.00%
  • Castrol

    41 34.17%
  • Nulon

    14 11.67%
  • Mobil

    19 15.83%
  • Penrite

    17 14.17%
  • Home Brand

    0 0%
  • Car manufacturer specific Oil

    4 3.33%
  • Other

    19 15.83%
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  1. #21
    OpelAus Enthusiast
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    Click here to enlarge Originally Posted by lithium Click here to enlarge
    Engine: Z18XE

    Current Oil: Nulon 10w-40 Synthetic

    Previous Oil: Shell 5w-40 Synthetic

    Feeling: you could hear some tapping from the valves with the 5w on startup in winter - switched to 10w and it is gone. Nulon is the only reasonably priced brand i've found that produces synthetic 10w-40?
    This one? I have heard awesome things about this oil. I think I will try it out
    Attached Images Attached Images

  2. #22
    OpelAus Forum Addict chrissn89's Avatar
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    Click here to enlarge Originally Posted by lithium Click here to enlarge
    g: Nulon is the only reasonably priced brand i've found that produces synthetic 10w-40?
    Fuchs have a synthetic 10w-40, its what ive always used in my Z20let, isnt overly expensive i dont think.

    Fuchs Titan Super GTO SAE 10w-40
    Click here to enlarge

  3. #23
    OpelAus Enthusiast lithium's Avatar
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    yep, the Nulon in the gold bottle is the one i use. i lol at the '32% less friction' claim every single time i look at the bottle Click here to enlarge the reason i use it is because its synthetic and 10w/40 is the factory recommended viscosity for my engine. no complaints thus far!

    the Fuchs looks interesting, i might try to track down a bottle for the next change. where do you buy it? i've never seen Fuchs in a Supercrap and Autodarn

  4. #24
    OpelAus Forum Addict chrissn89's Avatar
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    Click here to enlarge Originally Posted by lithium Click here to enlarge
    the Fuchs looks interesting, i might try to track down a bottle for the next change. where do you buy it? i've never seen Fuchs in a Supercrap and Autodarn
    I get it from my local mechanics in a 5L bottle.
    Click here to enlarge

  5. #25
    OpelAus Enthusiast Keep'emRunning's Avatar
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    Amazing, received a response from Castrol


    Thank you for your enquiry.

    I assume your vehicle in Australia is Holden Astra G 2.0 litre 16 valve with a turbo the year 2001-2004. If this is correct and as the vehicle is out of warranty, you could use Castrol Magnatec 10W-40, for Ultimate engine protect Castrol Edge 0W-30 can be used.

    Regards

    Castrol Technical Service - UK

    PS We have a Technical Service in Melbourne, their phone No 1300 557 998.

  6. #26
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    currently using Castrol Synthetic, however once used the below one and the car "liked it" (not available in AU);
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  7. #27
    OpelAus Enthusiast [OPCSRi]'s Avatar
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    Currently Using Mobil 2000 15w/40 semi synthetic. Using it since the car was purchased in 2003. Now for the next service i'm going to try Castrol Magnatec
    Click here to enlarge


    AWAITING NEW ASTRA J VXR TO COME OUT IN OZ!!!

  8. #28
    OpelAus Forum Regular Z20LET's Avatar
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    I've been told by an older motor mechanic it's best to choose an oil and stick to it as it's better for the engine. Not to sure how true that is though. Anyone else heard this before?
    Click here to enlarge

  9. #29
    OpelAus Enthusiast lithium's Avatar
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    i have, some people say all oils have different additives and it can be better to stay with the same type of oil because you know all the additives will be compatible

    in practice, in my opinion, oil is oil and in a relatively unstressed passenger car engine, regular changes probably matter more than the quality. and remember to use good oil filters too...on that topic has anyone noticed the GM filter for Z18XEs don't have an anti-drainback valve? Click here to enlarge even the nastiest aftermarket budget filters have one!

  10. #30
    OpelAus Post Whore gman's Avatar
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    Never use GM stuff...Always aftermarket on consumables
    Epsilon Renntech
    2003 Astra SRi-T - The Phantom
    EMTRON ECU
    Borg Warner EFR7163 & EFR9180
    Tuned by Scott @ Insight Motorsports

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