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Thread: Slight oil overfill - should I be worried?

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    Default Slight oil overfill - should I be worried?

    Hi all




    Just been checking my Vectra 1.8 vvt over which was serviced at the dealer before I collected it on Friday, and I have noticed the oil level is about 5mm over the top of the max mark. I checked the oil with the engine warm after waiting about 5 mins.

    Should I be worried about this? It's back in the dealer tomorrow for a couple of things so should I be asking them to drain the excess off?


    Thanks

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    Regular Member SlowCoach's Avatar
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    Yes you should but check level when car is settled or cold on level surface to check as engine ran so wont be level til then

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    Thanks for the quick reply, do you mean I should take it back or I should be worried?

    The manual says the level between min and max is 1 litre, so I am guessing about 0.25-0.5L overfill.

    I was always told to check the oil with the engine warm after waiting 5-10 mins to let it settle. What's the concensus from the experts?

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by Chip View Post
    Just been checking my Vectra 1.8 vvt over which was serviced at the dealer before I collected it on Friday, and I have noticed the oil level is about 5mm over the top of the max mark. I checked the oil with the engine warm after waiting about 5 mins
    It's back in the dealer tomorrow for a couple of things so should I be asking them to drain the excess off?
    What oil did they use (check the receipt)?
    It should be 5W30 GM-LL specification
    You could accept that they will drain a small amount

    Quote Originally Posted by Humourbash View Post
    Yes you should but check level when car is settled or cold on level surface to check as engine ran so wont be level til then
    On the Vectra C, you need to check the level when the engine is warm, not cold, as it should use GM-LL specification oil
    If you use any other type of oil, then you can check the oil when cold

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    Cheers, well the oil was done as part of the service before I picked up the car, in the service book it says 5w30 and when I asked the service manager what they had used when I collected the car, he said that they had ordered the oil & the filter from the Vauxhall dealer a couple of miles away & had quoted the reg and model. They seem a reputable dealer (Benfield Gateshead).

    So, hopefully it's the correct oil! I just checked it again with the car level 10 mins after getting home and it's still 5mm over the max level. I had been driving it before I had the chance to check it over and it seems to be running ok.

    Actually looking at the service book, the Vx main dealer was putting 10w40 in on previous changes! Both oil specs are listed as ok in the service book


    Is the general feeling that I should get it drained with this level of overfill?

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    Regular Member alcutler's Avatar
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    I wouldn't worry to much about it - first thing to do is check it on level ground when the engine has been off for a while to let the level settle - if its a couple of mm's over don't worry - the dipstick is not that accurate and I am sure it is calibrated with a safety margin to allow for slight variations - I always measure my oil in a litre jug when refilling after a drain and filter change and put the exact amount shown in the handbook and it rarely is dead on the top line on the dipstick - usually a little bit over.

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    Yes you should be worried. Extra oil can cause piston slap as the oil hits the bottom of the pistons, it can also cause excess pressure on some seals too. Its a joke that main dealers can get this so wrong. My dad had his Avensis main dealer serviced and the following day checked the oil and it was way over the maximum, if it was Quick Fit that did this we would rip them an new ********, some main dealers are worse than fast fit service places!!!! And twice the price too.

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    Yeah it's ridiculous that they don't make sure it's right. I'll check it cold in the morning and see what the level is then too. I wonder how many people are driving around with overfilled oil - loads I bet.


    I guess the obvious question is whether 5mm over the top of the max on the 1.8 vvt is too much over a 'normal' tolerance, and if you guys would get it drained?

    Excuse another stupid question but can they simply loosen the sump bolt to release some oil then tighten it back up without all the oil coming out? I don't want them to take out too much and end up putting some random oil in.

    Thanks for all the quick replies!

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    Thinking about it, would an oil extraction pump be ok with this engine? I could then make sure it's perfect & I have it on hand in case it happens again

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    I tend to agree, sounds like they have filled the oil up, checked it whilst still cold, then topped it up to the MAX
    This is INCORRECT
    As the car is going back, get the supplying garage to correct this
    Equally, show them the label under the bonnet "Check oil level when warm" or in the handbook...

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