gas 91 or 93?
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From: Massachusetts
gas 91 or 93?
The manual says 91 and above but is there really a huge difference between premium and super or w.e the octane ratings are? Id like to ave as much as I can and Ive actually been putting in regular for quite some time...
octane is resistance to detonation. dont put regular in your car, only for emergencies if anything. besides you are now on your low octane spark tables and losing out on quite a bit of power. run the premium
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From: ohio
yeah the money ur going to put into geting prem. over regular is totaly worth it... i beleave its harder on ur car and it works harder to run on regular... it remaps and re charts i beleave so u dont get knock but i would think that this is alot harder on the car than just running 93... the diffrence is only 2.00 or so on a full fill up...
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From: Massachusetts
Ive been doing it for almost 3 years cause the dealer said it was fine and I never though anything of it....doh. Can I switch over will it cause problems? Which rating should I run??
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From: Ontario, Canada
I figured this out a while ago for another thread much like this one...
Less than $200 per year to switch from 87 to 91 if your drive ~20000km a year.
I'd say that's a drip in the pond compared to what you paid for a performance car. Definitely worth switching to 91 or better to get all those ponies you paid for, and to make your car happy.
Actually, it's a lot like taking a girlfriend out for dinner. You can't just feed her mcdonalds all the time because it's cheap, she'll get fat and slow. Take her out for some super premium sometime and she'll pay you back.
Less than $200 per year to switch from 87 to 91 if your drive ~20000km a year.
I'd say that's a drip in the pond compared to what you paid for a performance car. Definitely worth switching to 91 or better to get all those ponies you paid for, and to make your car happy.
Actually, it's a lot like taking a girlfriend out for dinner. You can't just feed her mcdonalds all the time because it's cheap, she'll get fat and slow. Take her out for some super premium sometime and she'll pay you back.
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From: Massachusetts
I figured this out a while ago for another thread much like this one...
Less than $200 per year to switch from 87 to 91 if your drive ~20000km a year.
I'd say that's a drip in the pond compared to what you paid for a performance car. Definitely worth switching to 91 or better to get all those ponies you paid for, and to make your car happy.
Actually, it's a lot like taking a girlfriend out for dinner. You can't just feed her mcdonalds all the time because it's cheap, she'll get fat and slow. Take her out for some super premium sometime and she'll pay you back.
Less than $200 per year to switch from 87 to 91 if your drive ~20000km a year.
I'd say that's a drip in the pond compared to what you paid for a performance car. Definitely worth switching to 91 or better to get all those ponies you paid for, and to make your car happy.
Actually, it's a lot like taking a girlfriend out for dinner. You can't just feed her mcdonalds all the time because it's cheap, she'll get fat and slow. Take her out for some super premium sometime and she'll pay you back.
ah ok, well I mean is there a huge difference between 91 and 93 other than price?? and will my engine be ok if I switch?
Last edited by Stevo; May 31, 2009 at 07:50 PM. Reason: Automerged Doublepost
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From: Ontario, Canada
91 will be fine, that's what it's designed to run on. I use 94 just because I like to **** money away on my car, and I get 4x the Sunoco points compared to other octanes.
Switching will be fine... The first time you top off your tank with premium you're essentially going to be mixing the grades to create 89(ish) octane, so it wont be a drastic change for your car. Not that it matters anyways, the computer will adjust everything on the fly.
Switching will be fine... The first time you top off your tank with premium you're essentially going to be mixing the grades to create 89(ish) octane, so it wont be a drastic change for your car. Not that it matters anyways, the computer will adjust everything on the fly.
nope your car will run on the high octane spark table if it recognizes your on 91 and above. yes it will be fine when you switch back. let it run down to a little less than an 1/8th of a tank and fill up with 91. then after you go home, disconnect the negative terminal on the battery for 30 minutes. this will reset all your Fuel Trims so the car will "re-learn" its habits
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From: Massachusetts
91 will be fine, that's what it's designed to run on. I use 94 just because I like to **** money away on my car, and I get 4x the Sunoco points compared to other octanes.
Switching will be fine... The first time you top off your tank with premium you're essentially going to be mixing the grades to create 89(ish) octane, so it wont be a drastic change for your car. Not that it matters anyways, the computer will adjust everything on the fly.
Switching will be fine... The first time you top off your tank with premium you're essentially going to be mixing the grades to create 89(ish) octane, so it wont be a drastic change for your car. Not that it matters anyways, the computer will adjust everything on the fly.
nope your car will run on the high octane spark table if it recognizes your on 91 and above. yes it will be fine when you switch back. let it run down to a little less than an 1/8th of a tank and fill up with 91. then after you go home, disconnect the negative terminal on the battery for 30 minutes. this will reset all your Fuel Trims so the car will "re-learn" its habits
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From: Massachusetts
any idea how long it will take without doing that? I just have no idea where that thing is your talking about haha. Im a noob when it comes to more than basic stuff about cars
edit: I read your post wrong haha, just disconnect the negative cable on the battery? wowwww Im having a bad last few days haha
edit: I read your post wrong haha, just disconnect the negative cable on the battery? wowwww Im having a bad last few days haha
any idea how long it will take without doing that? I just have no idea where that thing is your talking about haha. Im a noob when it comes to more than basic stuff about cars
edit: I read your post wrong haha, just disconnect the negative cable on the battery? wowwww Im having a bad last few days haha
edit: I read your post wrong haha, just disconnect the negative cable on the battery? wowwww Im having a bad last few days haha
I thought we had to use 93 from the start? 
Or maybe 93 and up is for stage 2's.
Anyway, on my trip to MN i stopped twice for gas and one time was 92 and the other was 91, and I was like "WTF... no 93 octane?" I didnt want to put in anything under 93 but then again, my tank was empty.
Or maybe 93 and up is for stage 2's.Anyway, on my trip to MN i stopped twice for gas and one time was 92 and the other was 91, and I was like "WTF... no 93 octane?" I didnt want to put in anything under 93 but then again, my tank was empty.
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From: Edmonton, AB
93 Octane is actually recommended after you do Stage II. You can get by on 91 and the only issue you'll have with it is if you live somewhere cold in the winter. 91 is not normally enough octane when it's really cold out.
91 is more than enough for the regular tune on a lightly modified or unmodified SS/SC.
91 is more than enough for the regular tune on a lightly modified or unmodified SS/SC.
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From: Massachusetts
93 Octane is actually recommended after you do Stage II. You can get by on 91 and the only issue you'll have with it is if you live somewhere cold in the winter. 91 is not normally enough octane when it's really cold out.
91 is more than enough for the regular tune on a lightly modified or unmodified SS/SC.
91 is more than enough for the regular tune on a lightly modified or unmodified SS/SC.
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