Which octane is best for the 3.0 petrol engine ? - Page 2

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    #11
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    Quote Originally Posted by payno View Post
    yes they are but vanos controls (via the ECU) when and how long the exhaust and inlet valves open / close
    Not how long as it doesn't alter the profile, it alters the overlap


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    Quote Originally Posted by E36Coupe328 View Post
    Not how long as it doesn't alter the profile, it alters the overlap
    It's my understanding that vanos affects the phase of the camshaft, so it can open earlier and close later equally.

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    My opinion - standard octane fuel (95RON or less) should only be used on Carb-based injection systems due to systems involved

    If you want to extend the life of your fuel delivery components (pump, filter, injectors) and engine as well as maintain maximum mpg, higher octane should always be a pre-requisite
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    #14
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    Quote Originally Posted by pitch View Post
    Carb-based injection
    What do you mean by this?

    Quote Originally Posted by pitch View Post
    If you want to extend the life of your fuel delivery components (pump, filter, injectors)
    How does higher octane extend the life of these?

    Quote Originally Posted by papa_lazerous View Post
    It's my understanding that vanos affects the phase of the camshaft, so it can open earlier and close later equally.
    It doesn't alter the lobe profile the valve only opens for the same time, if it opens earlier it closes earlier. Twin vanos can alter the relationship of the cams to each other too.


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    #15
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    Quote Originally Posted by E36Coupe328 View Post
    Originally Posted by pitch
    If you want to extend the life of your fuel delivery components (pump, filter, injectors)
    How does higher octane extend the life of these?
    Some fuels such as V power will have cleaning agents added to them, keeping the system cleaner. In theory.
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