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    Apr 25, 2006 2:14:13 PM

    ant
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    ant
    Loc: uk
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    Registered on: Sep 28, 2005

    super unleaded or not!?

    my local porsche dealer said as i drove off in my beautiful new silver cayman that it really makes no difference whether you use normal or super!! he said if it was a ferrari then its worth it! great salesman eh!? i wonder if anyone really knows the truth? please advise me chaps..

    Apr 25, 2006 3:09:54 PM

    jjc
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    jjc
    Loc: GB
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    Registered on: Jul 31, 2005
    Reply to: ant

    Re: super unleaded or not!?

    Mine said use super or bring it in for servicing every 7k miles.

    Apr 25, 2006 3:36:14 PM

    twin turbo
    Junior
    twin turbo
    Loc: london uk
    Posts: 70, Gallery
    Registered on: Dec 29, 2005
    Reply to: jjc

    Re: super unleaded or not!?

    always put super unleaded in mine,. change your dealer!

    Apr 25, 2006 3:47:38 PM

    wangt1015
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    wangt1015
    Loc: CA, USA
    Posts: 284, Gallery
    Registered on: Mar 10, 2006
    Reply to: twin turbo

    Re: super unleaded or not!?

    there is a difference.. get 91 for sure..

    Apr 25, 2006 6:14:02 PM

    GR
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    GR
    Loc: S Bucks, England , United Kingdom
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    Registered on: May 17, 2005
    Reply to: wangt1015

    Re: super unleaded or not!?

    Mine's a 986 but I get better fuel consumption + better performance from the super unleaded. However, the few extra miles per tank roughly equates to the cost of using the dearer petrol so its a fairly Pounds neutral decision. The engine can run on both without problems.

    Apr 25, 2006 7:06:24 PM

    ElTonioni Offline
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    ElTonioni
    Loc: UK , United Kingdom
    Posts: 79, Gallery
    Registered on: Jun 30, 2005
    Reply to: GR

    Re: super unleaded or not!?

    I wouldn't think about anything else in my 997 and CTT. It simply pays for itself so I'd stick to Shell Optimax or BP Super.

    Apr 25, 2006 8:57:13 PM

    percymon
    Senior
    percymon
    Loc: Chester
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    Registered on: Aug 23, 2005
    Reply to: ElTonioni

    Re: super unleaded or not!?

    The filler cap says 98RON - enough said

    I ran my 986 on super - 6% more expensive that regular 95, but more power, better throttle response and 10% more mpg

    Apr 26, 2006 10:45:51 PM

    RCA
    Rennteam Administrator
    RC
    Loc: Rennteam HQ , Germany
    Posts: 22730, Gallery
    Registered on: Mar 26, 2002
    Reply to: ant

    Re: super unleaded or not!?

    Quote:
    ant said:
    my local porsche dealer said as i drove off in my beautiful new silver cayman that it really makes no difference whether you use normal or super!! he said if it was a ferrari then its worth it! great salesman eh!? i wonder if anyone really knows the truth? please advise me chaps..



    Mandatory are 98 octane, you can also use Optimax, V-Power or Ultimate (varies from countries to countries) which usually have 99 or 100 octane (actually most 98 octane fuel brands have already 100 octane, just a little hint ).
    It is indeed possible to use up to 95 octane or even 91 but only for a temporary time period. Your sales person is just plain dumb, sorry to say that.

    We should also be careful: in the US, they have different octane ratings. As far as I remember, 98 octane Europe translates into 95 octane US (ROZ/MOZ?...I always forget that sh.t ). In the US, people should use minimum 93 octane if they can't get something better. I wouldn't track race my car if using 91 octane on a regular basis.

    Hope this helps.

    Apr 26, 2006 11:47:23 PM

    The Groom
    Expert
    The Groom
    Loc: EU
    Posts: 1779, Gallery
    Registered on: Jan 23, 2005
    Reply to: RCA

    Re: super unleaded or not!?

    I think the US uses the mean of MON and RON. Since usually MON = RON - 10, US octane = RON - 5.
    i.e. 98 octane in the EU = 93 octane in the US.

    I might be wrong though, so feel free to correct me if you know better.

    Apr 27, 2006 12:58:45 AM

    Jim_in_Iowa
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    Jim_in_Iowa
    Loc: US
    Posts: 257, Gallery
    Registered on: May 18, 2005
    Reply to: The Groom

    Re: super unleaded or not!?

    The U.S. uses RON+ROM/2.

    As for what you can get, it varies widely. Within 10 miles of me, in Shell only, you can get:

    1) V-Power 93 Octane (I just paid $3.049 USD/gallon for this today)
    2) V-Power 93 Octane with 10% Ethanol (E10) (costs $2.949)
    3) V-Power with 91 Octane

    It's confusing as hell. I even spoke to the tanker (lorry) driver who delivers the gas. He says while they might all be Shell, they're semi-independent.

    Some states have been pressured into mandating E10 because of the (false) PR. At the moment, it tends to be just in mid-grade (89 octane) gas, except some stations, usually with food marts, sell it in all grades, because their is a Road Use tax exemption for E10, and thus it's cheaper, since everyone else gets to subsidize it. Other states, such as California, can't get anything higher than 91 octane except for a few "race" fuel outlets.

    BTW, around here BP Ultimate (93, no alcohol) is 2.999. I usually buy #1 above because that station owner is adamantly anti-E10, and I want to support him.

    Oh, my philosophy is to put the best in. I didn't buy a Porsche to skimp 15 cents on gas.

    Apr 27, 2006 1:42:25 AM

    Helo Driver
    Newbie
    Helo Driver
    Loc: Alabama
    Posts: 19, Gallery
    Registered on: Mar 2, 2006
    Reply to: Jim_in_Iowa

    Re: super unleaded or not!?

    I heard that we just passed legislature last week to require all fuel to have E-10 (ethanol) in it. It's better for the environment or something. Is this true?

    If it is true, how does it affect performance and fuel quality?

    Shane

    Apr 29, 2006 10:32:54 PM

    Jim_in_Iowa
    Co-Pilot
    Jim_in_Iowa
    Loc: US
    Posts: 257, Gallery
    Registered on: May 18, 2005
    Reply to: Helo Driver

    Re: super unleaded or not!?

    It's not better for the environment, it's due to effective lobbying.

    http://en.wikipedia.org/wiki/Ethanol_fuel#Arguments_and_criticisms

    http://www.courier-journal.com/apps/pbcs.dll/article?AID=/20050421/NEWS01/504210377/1008

    http://www.cbsnews.com/stories/2002/05/03/tech/main508006.shtml

    Apr 30, 2006 8:38:13 PM

    mcdelaug
    Senior
    mcdelaug
    Loc: Houston, Texas
    Posts: 730, Gallery
    Registered on: Mar 3, 2004
    Reply to: Jim_in_Iowa

    Re: super unleaded or not!?

    I agree with Jim,

    Ethanol blended fuel is pork for the midwest, it has no benefit to consumers and probably makes little impact in reduction in reliance on imported fossil fuels given how large scale agriculture is performed in this country.

    mcdelaug
     
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