View Poll Results: Do you use Premium or Regular?
Regular
31
36.47%
Premium
54
63.53%
Voters: 85. You may not vote on this poll
Premium or regular?
09-01-2007, 09:11 PM
#16
Pro
Join Date: Sep 2005
Location: Lake Tapps, WA
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I put either 89 or 92 in the S, I thought that with the higher comp ratio you should use a higher octane, but it runs on 89 like a charm. So I use mid grade I guess?
09-01-2007, 09:56 PM
#17
Rennlist Member
For what its worth, I run regular, but did put premium in it for a few tanks and didn't notice it running any better while it had the +2s in it.
09-01-2007, 11:37 PM
#18
Three Wheelin'
Join Date: Mar 2007
Location: Land of 10,000 potholes
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+1 those platinum x2, x4's don't really seem to do much except degrade engine performance. I put the x2's into my 4runner and it doesn't even feel remotely as torquey as it did when I had the regular NGK's in it. I run my 83' 944 with Bosch Platinum x1's on 87 and it runs like a dream. I ran it once or twice on 91 but couldn't feel enough difference to justify the extra $6 per tank / $48 per month / $576 per year.
09-02-2007, 12:22 AM
#20
Rainman
Rennlist Member
Rennlist Member
The car seemed faster after I changed from copper to platinum plugs...but maybe thats just my imagination again 
greenshoes, you want me to buy a turbo? Sorry, I want a car that will actually drive...
greenshoes, you want me to buy a turbo? Sorry, I want a car that will actually drive...
09-02-2007, 02:13 AM
#21
Three Wheelin'
Join Date: Aug 2002
Location: PNW
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09-02-2007, 02:15 AM
#22
Racer
Join Date: Feb 2004
Location: Richmond, VA.
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+1 those platinum x2, x4's don't really seem to do much except degrade engine performance. I put the x2's into my 4runner and it doesn't even feel remotely as torquey as it did when I had the regular NGK's in it. I run my 83' 944 with Bosch Platinum x1's on 87 and it runs like a dream. I ran it once or twice on 91 but couldn't feel enough difference to justify the extra $6 per tank / $48 per month / $576 per year.
On the plugs though...+ 1. I concur as I did the same with my '83 when I had it. I am assuming my '88 will also do well with the regular platinums...
09-02-2007, 05:16 AM
#23
Three Wheelin'
Join Date: Mar 2007
Location: Land of 10,000 potholes
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Last several gas stations I saw here in the Bay Area had about a $.30 cushion between regular and premium. $.30 x 20 gallons per fill up = $6, and I drive about 60-70 miles on average per day and about 100 miles per day on the weekends with my car getting 20mpg avg. which = about 2 fill ups per week so 6 x 2 x +/- 4 times per month = $576 a year. Of course, everybody's driving habits and mpg. per car are different.
09-02-2007, 04:02 PM
#25
Burning Brakes
Join Date: Jan 2007
Location: Austin TX
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I like to run premium in my car because when a refinery is cracking gas they run it through a couple of extra sulphur extractors for the longer process stuff - which premium is. That said I dont notice too much a difference between the two, except that it seems to idle and pick up off idle more smoothly on premium than regular. I also run a large gap on a copper plug with raised Euro spec compression, still havent noticed pinging on 87 oct though.
That said, everybody seems to like Chevron, and Ive used Exxon and Valero with pretty good sucsess but every time I run SHELL the mileage is poor, it has a funny smell at WOT, and the engine runs much MUCH HOTTER - like on the third bar of the guage vs on the second. Im not imagining things b/c occasionly I have to stop at Shell gas stations (different ones!) to get gas because I dont have a choice and the car has had these symptoms for about the 4th time in a row on Shell gas ONLY.
Does anyone else have issues with Shell?
That said, everybody seems to like Chevron, and Ive used Exxon and Valero with pretty good sucsess but every time I run SHELL the mileage is poor, it has a funny smell at WOT, and the engine runs much MUCH HOTTER - like on the third bar of the guage vs on the second. Im not imagining things b/c occasionly I have to stop at Shell gas stations (different ones!) to get gas because I dont have a choice and the car has had these symptoms for about the 4th time in a row on Shell gas ONLY.
Does anyone else have issues with Shell?
09-02-2007, 04:18 PM
#26
Burning Brakes
Join Date: Mar 2003
Location: Marietta GA
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Regular fuel should not cause hard starting. It actually burns better cold than Premium. That being said I Run premium in my S which is recommended by Porsche and Autothority which is the chip I have.
09-02-2007, 04:22 PM
#27
Burning Brakes
Join Date: Mar 2003
Location: Marietta GA
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Bosch platinum plug are junk in a fuel Injected engine. The Center Electrode is too small and gets burned when the system is toggling lean. They run rich lean and back and forth to control HC's and CO' on one side and NOX on the other. I have removed these plugs from cars 5000 miles after they were installed and you can't even see the center electrode.
09-02-2007, 04:31 PM
#29
Drifting
Thread Starter
lol way to give it the old triple post.
Anyway, I dont have any chevrons around here. We have Wawa, Getty, BP, i think one Shell, and probably a couple more that I cant think of.
Anyway, I dont have any chevrons around here. We have Wawa, Getty, BP, i think one Shell, and probably a couple more that I cant think of.
09-02-2007, 06:07 PM
#30
Rennlist Member
Remember that Texaco stations are now rebadged chevrons.
Aren't the factory recomendations for octane 91 for the n/a's and 96 for the turbo's, or something like that?
Aren't the factory recomendations for octane 91 for the n/a's and 96 for the turbo's, or something like that?