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Thread: Diesel Again

  1. #1
    Regular Member WeDesign's Avatar
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    Vehicle : Vectra

    Trim : Design

    Engine : CDTi 150

    Year : 55

    Default Diesel Again

    I have been reading that Branded Diesel Shell, BP, Texaco diesels are far better for your car than supermarket brands, I refer at this point to the standard diesels not the Ultimare/Extra or whatever they are called.

    Secondly, are the Ultimate/Extra variety that much better again.

    I not asking are they better MPG but just generally better for the engine.

    Can anybody shed some light on this topic?


    Cheers in Advance

  2. #2
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

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    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

    Default

    Quote Originally Posted by DavidJS View Post
    I have been reading that Branded Diesel Shell, BP, Texaco diesels are far better for your car than supermarket brands, I refer at this point to the standard diesels not the Ultimare/Extra or whatever they are called.

    Secondly, are the Ultimate/Extra variety that much better again.

    I not asking are they better MPG but just generally better for the engine.

    Can anybody shed some light on this topic?


    Cheers in Advance
    Just a point mate, extra is standard diesel, the uprated stuff is v-power

  3. #3
    Regular Member WeDesign's Avatar
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    Quote Originally Posted by john.robertson2 View Post
    Just a point mate, extra is standard diesel, the uprated stuff is v-power
    OK, other than your ever so slight remark can you shed some light on the original question?

  4. #4
    Regular Member m111kan's Avatar
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    Ive never used supermarket brand since all the cars were breaking down due to dodgy fuel (purchased at supermarkets) a while back. That problem probably well since fixed now but i just wouldnt anymore.

    Besides, as for the question, I just trust Shell, BP etc to know more about whats best for my car than Tesco or Morrisons would lol

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    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

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    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

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    Well i personally just use standard but put in Millers diesel sport 4 in at the same time, keeps the engine,injectors, pump clean and working. The millers also increases the cetane rating of the diesel by 4 numbers giving a very slight increase in power.
    As for MPG the extra you pay for premium diesels doesn't justify it. You may get an extra 1 mile to the gallon. Regular servicing is the best way to get MPG

    hth

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    I have a relative that works for a diesel injection specialist and he advised me to stay away from supermarket diesel as they might meet the fuel standards, but they dont have the additional additives that clean out the fuel system. Like john.robertson2, I have always used Shell Diesel Extra, with a few shots of Millers Diesel Sport 4, especially as my relative informed me that my fuel pump would cost £1000 to replace.

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    Regular Member Ste's Avatar
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    BS:EN590 is the standard which is referenced for road fuel.

    The cleanliness spec is a requirement within that spec, so saying that branded fuels have more detergents is somewhat simplifiying it. It is the effectiveness that is important, and how much residue left.

    TBH, I doubt that there is any measurable difference between all the normal fuels from any source that you could measure without specialised lab equipment.
    I wouldn't worry about it at all. I use mainly Asda Petrol (as it is closest to me) and before this car, I happily used Asda Diesel for my 2 previous cars, and also in my wifes current car.

  8. #8
    Regular Member WeDesign's Avatar
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    Vehicle : Vectra

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    Engine : CDTi 150

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    Default

    Quote Originally Posted by Ste View Post
    BS:EN590 is the standard which is referenced for road fuel.

    The cleanliness spec is a requirement within that spec, so saying that branded fuels have more detergents is somewhat simplifiying it. It is the effectiveness that is important, and how much residue left.

    TBH, I doubt that there is any measurable difference between all the normal fuels from any source that you could measure without specialised lab equipment.
    I wouldn't worry about it at all. I use mainly Asda Petrol (as it is closest to me) and before this car, I happily used Asda Diesel for my 2 previous cars, and also in my wifes current car.
    Nice to see you here again Ste,

    Thanks for your input from my original question, I was starting to use the Ultimate range from BP, but it's 12p per litre more and not 100% certain it really makes any noticeable difference.

    Once again, thanks for your input

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    Regular Member justyb's Avatar
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    i used to put in sainsburys city diesel but the cdti drank it so i now use shell diesel and runs better

  10. #10
    Regular Member m8internet's Avatar
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    As I've discussed before, when it comes to diesel it makes virtually no difference
    However for petrol the difference can be substantial

    [For diesel] Find out which refinery the diesel comes from and that is the brand you are buying
    Each retailer then adds their key (additive) to the tanker, but the amount is so small it's virtually insignificant

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