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Thread: Which oil any ideas?

  
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    fuzzygavino's Avatar
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    Which oil any ideas?

    Right planning on doing a service on my GSi this weekend and of course was wondering which oil is best to use, it has been on 5/30 the whole time the guy who owned before me told me, but then Iíve been reading on here the forís and againsts for running a GSi with the VXR turbo upgrade on 5/30. So I contacted Opie oils who said 5/40 maybe a better compromise. But to confuse the situation even further having read through quite a few threads on here about oils it seems to thin will blow past the seals, so Iím stuck please any help or input on peoples own experiences with oils would be great, what oil do you use???

    Thanks in advance. Gavin

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    BurrTony's Avatar
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    5/30 is a bad idea, I would probably walk away from a gsi that had been run on it long term because it will ware your engine out quicker. As Opie oils said 5/40 is a better compromise an upgrade would be 10/50.

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    jstanley's Avatar
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    5/40 fully synthetic in my gsi everytime

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    The cars engine had been worked on and the turbo replaced just before I bought it which may point to the premature engine wear you mentioned. Having just been into vauxhall to pick their brains it seems 10/40 or 5/40 would be the best bet possibly.

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    I run 10/40 on mine no problem..

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    \Doug/'s Avatar
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    5w40 fully synthetic


    http://www.astraownersclub.com/vb/sh...d.php?t=130306
    ^^^read this, then read it again so it sinks in fully^^^

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