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Thread: What Petrol in Ferrari

  1. #41
    francisn is offline Post whore with no life, no friends, and a problem fitting into normal social circles Admin dude
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    Got round to checking my 308 GT4 instruction book which says
    supercarburant 94/100 N.O. (which I assume means Numero Octane) in Italian and German
    Premium 93/100 O.N. ( think the 93 must be a typo for 98) 4 or 5 star according to BSI system in English. O.N. I assume to be Octane number. 4 star was 98 and 5 star was 101.

    As my engine was rebuilt in 1990 with higher compression even more important I use 98.

    I had a chat with a Ferrari owning friend who is in the oil business (he specialises in deep sea drilling - the engineering side not actually doing it) who is pretty clued up on all things to do with oil including petrol. Pity he isn't on here to add to the discussion but he doesn't like forums. He pretty much concurred with what has been said on here from the resumé I gave him. He said that he believed that EU regulations require that all current production cars should run on 95 and that the ECUs should be able to detect the knock point and adjust the timing to maximise performance. He agreed that the biggest benefit of 98 fuel is the better additives. With insider knowledge he wouldn't touch Esso with a bargepole and that in terms of additives the two best are Shell Vpower 98 and Tesco 99.

    Interestingly he pointed out that petrol formulation changes from winter to summer with more volatility in winter than summer to help cold starting in winter and less evaporation in summer. He didn't know whether Mon's fuel from Grangemouth would be the same as my fuel from Fowey at this time of year (apparently temp in Aberdeen today is 11 deg). So lots of variables.

  2. #42
    francisn is offline Post whore with no life, no friends, and a problem fitting into normal social circles Admin dude
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    Quote Originally Posted by MalcH View Post
    As the tanker fills up, I believe.
    Or even as it is delivered to the filling station my expert friend tells me.

  3. #43
    mon the fish's Avatar
    mon the fish is offline Hey look at that Peugot 406! Oh no it's a Ferrari 360 Committee Member
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    Quote Originally Posted by francisn View Post
    Got round to checking my 308 GT4 instruction book which says
    supercarburant 94/100 N.O. (which I assume means Numero Octane) in Italian and German
    Premium 93/100 O.N. ( think the 93 must be a typo for 98) 4 or 5 star according to BSI system in English. O.N. I assume to be Octane number. 4 star was 98 and 5 star was 101.

    As my engine was rebuilt in 1990 with higher compression even more important I use 98.

    I had a chat with a Ferrari owning friend who is in the oil business (he specialises in deep sea drilling - the engineering side not actually doing it) who is pretty clued up on all things to do with oil including petrol. Pity he isn't on here to add to the discussion but he doesn't like forums. He pretty much concurred with what has been said on here from the resumé I gave him. He said that he believed that EU regulations require that all current production cars should run on 95 and that the ECUs should be able to detect the knock point and adjust the timing to maximise performance. He agreed that the biggest benefit of 98 fuel is the better additives. With insider knowledge he wouldn't touch Esso with a bargepole and that in terms of additives the two best are Shell Vpower 98 and Tesco 99.

    Interestingly he pointed out that petrol formulation changes from winter to summer with more volatility in winter than summer to help cold starting in winter and less evaporation in summer. He didn't know whether Mon's fuel from Grangemouth would be the same as my fuel from Fowey at this time of year (apparently temp in Aberdeen today is 11 deg). So lots of variables.
    It's a scorching 18 degrees here

    Sent from my SM-G950F using Tapatalk

  4. #44
    MalcH's Avatar
    MalcH is offline Post whore with no life, no friends, and a problem fitting into normal social circles Club Member
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    Quote Originally Posted by francisn View Post
    Got round to checking my 308 GT4 instruction book which says
    supercarburant 94/100 N.O. (which I assume means Numero Octane) in Italian and German
    Premium 93/100 O.N. ( think the 93 must be a typo for 98) 4 or 5 star according to BSI system in English. O.N. I assume to be Octane number. 4 star was 98 and 5 star was 101.

    As my engine was rebuilt in 1990 with higher compression even more important I use 98.

    I had a chat with a Ferrari owning friend who is in the oil business (he specialises in deep sea drilling - the engineering side not actually doing it) who is pretty clued up on all things to do with oil including petrol. Pity he isn't on here to add to the discussion but he doesn't like forums. He pretty much concurred with what has been said on here from the resumé I gave him. He said that he believed that EU regulations require that all current production cars should run on 95 and that the ECUs should be able to detect the knock point and adjust the timing to maximise performance. He agreed that the biggest benefit of 98 fuel is the better additives. With insider knowledge he wouldn't touch Esso with a bargepole and that in terms of additives the two best are Shell Vpower 98 and Tesco 99.

    Interestingly he pointed out that petrol formulation changes from winter to summer with more volatility in winter than summer to help cold starting in winter and less evaporation in summer. He didn't know whether Mon's fuel from Grangemouth would be the same as my fuel from Fowey at this time of year (apparently temp in Aberdeen today is 11 deg). So lots of variables.
    Quote Originally Posted by francisn View Post
    Or even as it is delivered to the filling station my expert friend tells me.
    Excellent thank you. That's reason enough for me to continue.

  5. #45
    sweeni's Avatar
    sweeni is offline Nowhere to put the shopping -The Ferrari F40 Club Member
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    Quote Originally Posted by francisn View Post
    My carburetted 308 GT4 definitely prefers premium!
    The 308 engine requires 98octane whether carb or injection. I generally use either Tesco99 or Shell Vmax.

    My 550 requires bog standard 95 octane so that is what it gets.

    The price some companies charge over 95 octane for higher octane fuel is utterly ridiculous and in some cases is only 2 points higher so still not enough for a 308 anyway. I always carry a few bottles of Millers octane boost in the 308 in case I cannot locate 98 or 99 octane fuel.
    Last edited by sweeni; 24-08-2018 at 08:46 PM.
    "When Lance "cries" on Oprah , spare a thought for all of those genuine people who walked away with no reward – just shattered dreams. Each one of them is worth a thousand Lances"

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