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Thread: Is there an oil expert in the house?

  1. #1
    Regular Member sheepish's Avatar
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    Default Is there an oil expert in the house?

    I'm off to buy some oil in Hlaford easter sale, Castrol Magnatec 4litres for £17.50. They have both the Vauxhall and Ford versions for sale.

    Now, the Vauxhall version is ACEA A3 B3/B4 (and GM LL etc.) and the Ford is ACEA A1 B1 or A5 B5 (and WSS-M2C-913-C, etc). As I change my oil every 10k and am not concerned with the long life bit, would the Ford version prove a more fuel efficient oil???

    I found this (see below) at http://www.driverstechnology.co.uk/oils.htm and the A5 includes A1 fuel economy with A3 performance???


    ACEA
    This is the European equivalent of API (US) and is more specific in what the performance of the oil actually is. A = Petrol, B = Diesel and C = Catalyst compatible or low SAPS (Sulphated Ash, Phosphorus and Sulphur).
    Unlike API the ACEA specs are split into performance/application catagories as follows:
    A1 Fuel economy petrol
    A2 Standard performance level (now obsolete)
    A3 High performance and/or extended drain
    A4 Reserved for future use in certain direct injection engines
    A5 Combines A1 fuel economy with A3 performance

  2. #2
    Regular Member barney490's Avatar
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    Default

    I see where you are coming from, but personally i would be using the Vauxhall version oil. To me it's a case of better safe than sorry. I look forward to seeing others views on this.

  3. #3
    Regular Member Critch's Avatar
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    Vehicle : Mk1 renault scenic... I know I know but it drives

    Trim : Basic

    Engine : 1.6 16v

    Year : 2003

    Default

    As above wouldnt really want to try something else.

    I mean you'll probably be perfectly fine with others but just in case.

    I use vxls own fully synth oil an change it every 7k

  4. #4
    VIP-Member Das's Avatar
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    Vehicle : Lada

    Trim : Riva

    Engine : 6.0 V12

    Year : 1954

    Mileage : 567890987

    Default

    I cant see why you couldnt use the A1 spec, as the VX spec one is just to aid it achieve the 20,000 mile service intervals that the Vec has.

  5. #5
    Regular Member m8internet's Avatar
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    Default

    As these are all fully synthetic oils, you won't notice any difference in fuel efficiency, the difference will be so small it will be negligible

    As you plan to change the oil and oil filter every 10K miles you can use any synthetic oil down to 10W40
    You could swap from fully synthetic to part synthetic, but that would simply be a personal choice and cost consideration

    Compare :
    A
    original service interval 20K miles / 1 year or 20K miles / 2 years or 30K miles / 2 years
    Oil costs £30 to £60, oil filter costs £40
    B
    10K miles
    Oil costs £20 to £40, oil filter costs £20 (After Market version)

    As mentioned numerous times, this is personal choice, and from the above the costs don't really matter
    It is only a consideration whilst the car is under 100K miles / a warranty applies or can be applied in the future

    Just as an aside, we recently started stocking the A5B5 oils, intended for Volvo but can be used in most other vehicles

    If you want some reading, pay attention to the Kinematic 100'C :
    http://www.opieoils.co.uk/pdfs/castr...w-40-a3-b4.pdf
    http://www.opieoils.co.uk/pdfs/castr...0-fst-a5b5.pdf
    http://www.opieoils.co.uk/pdfs/castr...-0w-30-fst.pdf
    http://www.opieoils.co.uk/pdfs/castr...-oil-a3-b4.pdf (this would be my recommendation from the Castrol range)
    Last edited by m8internet; 8th April 2012 at 13:00.

  6. #6
    Regular Member sheepish's Avatar
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    Default

    Thanks for this.

    So comparing the datasheets for the Magnatec 5W30 Ford and Vauxhall kinematic viscosity @ 100’C, the Ford version is 9.46 and the Vauxhall is 11.43.

    So if I’m reading this correctly, the Ford version is the ‘thinner’ of the two?

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    Default

    I picked up the 4L Castrol Magnatec for Vauxhall yesterday.

    Bargain at 17.99 considering they are also selling 1 Litre of it for 10.99.

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