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Thread: Bit of service advice if you would be so kind

  
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    Question Bit of service advice if you would be so kind

    I'm going to change the spark plugs on my z20let, going for the ngk bkr6eix, first question is it better to use the 0.8mm gapped ones or the -11 1.1mm gapped ones,

    I've read threads about this but only with controversial opinions from both sides and where can I buy them off the shelf?

    Next is do the plugs have to be gapped when inserting or is the standard 25nm of torque from the trusty torque wrench adequate?

    When changing the fuel filter, where is the fuel line depressurization clip on the z20let?

    And for the oil, first, is it safe to use engine flush on the z20let?

    What oil do people use on the most part? 5w 40, 10w40? Full synthetic? Part synthetic and also which brand?

    Thanks for the advice in advance and please don't flame me if I've said anything stupid, Im obviously unsure or I wouldn't be asking lol
    http://www.astraownersclub.com/vb/sh...-s-VXRed/page1 - My VXR - AOC Top 10 Winner PVS 2013 - 304BHP Powered By RS Tuning & Arc Reactor

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    ribsmoth87's Avatar
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    ive used both 5w 4o and 10w40, runs best on 10w40 tbh mate
    5w seems to be a bit thin and slips past the seals causing smoke.
    0.8mm gap is best apparently

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    nry's Avatar
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    5w is only thinner when cold though...

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    Dont bother with engine flush, it can often do more harm than good.

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    engine flush big no no!!!! cause far too many problems for my liking, If you need GM service bits cheaper than any other dealer with vauxhall invoice let me know, all in stock!

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    Bloke in Halfords has told me engine flush is fine and 5w30 is best :s think they just like hearing their own voices sometimes lol it's definately not the first time I've had wrong advice from there haha and help on the spark plugs? On how far they thread in lol
    http://www.astraownersclub.com/vb/sh...-s-VXRed/page1 - My VXR - AOC Top 10 Winner PVS 2013 - 304BHP Powered By RS Tuning & Arc Reactor

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    Quote Originally Posted by CraigJG View Post
    Bloke in Halfords has told me engine flush is fine and 5w30 is best :s think they just like hearing their own voices sometimes lol it's definately not the first time I've had wrong advice from there haha and help on the spark plugs? On how far they thread in lol
    Yeah key there it was the bloke in Halfords, what you need to remember is a) they are there to sell as much as they can b) they work in Halfords, its a bit like going to an abortion clinic and asking how to get pregnant.

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    Lmao duely noted, I didn't even go in to ask I started asking about the spark plugs and he just waffled on for aaaages can't seem to get them off the shelf in most of the places around me but I'll mooch around tomorrow. I like the visual metaphor there, really got the point across haha
    http://www.astraownersclub.com/vb/sh...-s-VXRed/page1 - My VXR - AOC Top 10 Winner PVS 2013 - 304BHP Powered By RS Tuning & Arc Reactor

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    can you not buy some ngk's from courtenay sport mate?
    i use there plugs. been spot on for almost 2 years. it even eradicated a missfire i had when i bought the car.

    i also use castrol magnatec 10w-40. part synthetic.
    a lot of people use vauxhalls own stuff and change it ever few thousand miles
    the nipple to de-pressurise the fuel lines is on the fuel/injector rail i think. its got like a black dust cap on it.
    Arden Blue Astra GSi




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    I could but it's miles away and I could do with them tomorrow is all, cheers for the other info I'm nearly ready to go just need to know about gapping the plugs
    http://www.astraownersclub.com/vb/sh...-s-VXRed/page1 - My VXR - AOC Top 10 Winner PVS 2013 - 304BHP Powered By RS Tuning & Arc Reactor

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