Is it unreasonable to expect a full tank of gas on delivery?
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On that note - what kind of gas do you put in? whats funny is, one of my local dealers said and I quote "this car will also work with 87 octane just as good as with 93" - honestly I was stumped when I heard that ...and this coming from a certified Porsche brand ambassador 
the manual clearly says that premium fuel is required (although it does not mention an octane rating)
the manual clearly says that premium fuel is required (although it does not mention an octane rating)
With a higher compression engine you will "knock" without higher octane fuel. And this is bad since it can rapidly destroy the engine.
However modern engines have gotten more sophisticated and have sensors to detect the onset of knocking and retard the timing so it doesn't happen.. This is why Porsche recommended 93 octane but say that it is ok to use lower octane fuel (I think no less than 91)... I would never put 87 in myself.. I just use 91 which is all we can get in california..
This retarding reduces performance and I believe may impact gas mileage as well.
What is true is that using an octane that is higher than your engine really needs is nothing but a waste of money... A typical low compression engine that is designed to run on 87 octane gets absolutely no benefit from putting in premium grade fuels.. (although the gas co's tend to muddle this and encourage you to put higher octane in as a means of better performance..)...
Where the confusion comes in often is that last statement... "higher than you need"... For a sophisticated engine like a porsche that in effect can detect octaine (by presence of knock) it can utilize that higher octane.. So thus running off of 93 (or higher) has performance benefits. However running 93 in a low compression engine that is designed to only benefit from 87 is just a waste and has no benefits.
Last edited by scatkins; May 8, 2014 at 01:01 PM.
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In my experience, it really depends on the dealership. I received what I considered excellent customer service from a Porsche dealership that didn't sell me my car...my P4S broke-down on a Saturday; I was able to drive it to this dealership; the Service Department was closed; one of the salesmen drove me home; on the following Monday, the Service Department called to inquire whether I wanted a loaner delivered to me; after the car was repaired they explained they wanted to keep it an extra day to test all the fault codes; after that was done, they delivered my P4S to me at home. By the same token, I once received absolutely lousy service from a Lexus dealership. [I've owned 5 Lexus cars.] I visited this particulat Lexus dealership one Saturday morning to test their GS cars; I arrived in a leased SC400 that was about to end; I waited 45 minutes for a test drive that lasted 5 minutes and was told that I needed to schedule an appointment for a test drive; I left and drove to another Lexus dealership where I bought a GS that same day.
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On that note - what kind of gas do you put in? whats funny is, one of my local dealers said and I quote "this car will also work with 87 octane just as good as with 93" - honestly I was stumped when I heard that ...and this coming from a certified Porsche brand ambassador the manual clearly says that premium fuel is required (although it does not mention an octane rating)
the manual clearly says that premium fuel is required (although it does not mention an octane rating)I recall reading in the manual not to use any fuel below 93 octane.
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The main difference with higher octane is not energy content it is it's ability to not detonate under compression.. So as long as the fuel doesn't detonate (i.e. knock/ping) it will run just as well.
With a higher compression engine you will "knock" without higher octane fuel. And this is bad since it can rapidly destroy the engine.
However modern engines have gotten more sophisticated and have sensors to detect the onset of knocking and retard the timing so it doesn't happen.. This is why Porsche recommended 93 octane but say that it is ok to use lower octane fuel (I think no less than 91)... I would never put 87 in myself.. I just use 91 which is all we can get in california..
This retarding reduces performance and I believe may impact gas mileage as well.
What is true is that using an octane that is higher than your engine really needs is nothing but a waste of money... A typical low compression engine that is designed to run on 87 octane gets absolutely no benefit from putting in premium grade fuels.. (although the gas co's tend to muddle this and encourage you to put higher octane in as a means of better performance..)...
Where the confusion comes in often is that last statement... "higher than you need"... For a sophisticated engine like a porsche that in effect can detect octaine (by presence of knock) it can utilize that higher octane.. So thus running off of 93 (or higher) has performance benefits. However running 93 in a low compression engine that is designed to only benefit from 87 is just a waste and has no benefits.
With a higher compression engine you will "knock" without higher octane fuel. And this is bad since it can rapidly destroy the engine.
However modern engines have gotten more sophisticated and have sensors to detect the onset of knocking and retard the timing so it doesn't happen.. This is why Porsche recommended 93 octane but say that it is ok to use lower octane fuel (I think no less than 91)... I would never put 87 in myself.. I just use 91 which is all we can get in california..
This retarding reduces performance and I believe may impact gas mileage as well.
What is true is that using an octane that is higher than your engine really needs is nothing but a waste of money... A typical low compression engine that is designed to run on 87 octane gets absolutely no benefit from putting in premium grade fuels.. (although the gas co's tend to muddle this and encourage you to put higher octane in as a means of better performance..)...
Where the confusion comes in often is that last statement... "higher than you need"... For a sophisticated engine like a porsche that in effect can detect octaine (by presence of knock) it can utilize that higher octane.. So thus running off of 93 (or higher) has performance benefits. However running 93 in a low compression engine that is designed to only benefit from 87 is just a waste and has no benefits.
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I always got a full tank of gas with any car I have purchased, high end or low end. Not worth losing sleep over, but shows a lack of class on the dealer's part as it sounds like it was deliberate, not an oversight.
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Three pages??? really? We always fill up cars before they get delivered however, as someone mentioned it might because it was shipped. This is usually at the request of the shipping company. I wouldnt worry much about it just go out and drive the car and enjoy it!
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