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post #1 of 33 (permalink) Old 06-25-2003, 08:45 PM Thread Starter
 
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what kind of gas?

hey,

this is a question for those people that have their manuals from their intrepid cars

i only have one question: what is the recommended gas for the intrepid in the manual?? 87, 89 or 93???

i dont have a manual thats why i ask this question.

i put 93 always, is that good or bad, or normal?? it never did any harm to the car, or any trouble so far, but i just want to know what the manufacturer says about that

i have an 2000 2.7 v6 intrepid
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post #2 of 33 (permalink) Old 06-25-2003, 09:07 PM
 
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I dont have a manual...but....IMO you arent gaining enough from 93 to make it worth your money.
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post #3 of 33 (permalink) Old 06-25-2003, 09:34 PM
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I have a 2001 Intrepid.....the recommended octane is 87. You will get no benefit from using the higher octane. Higher octane is recommended for cars with high compression ratios because the air fuel mixture is hotter in the cylinder due to the high compression and needs a higher "exploding point" (octane) so that it does not pre-ignite before the cylinder reaches TDC (top dead center)...whew!....hope that clears it up....
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post #4 of 33 (permalink) Old 06-25-2003, 09:38 PM
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87 for the 2.7's FOR SURE. 87 for my 3.5, but for more HP they say I can use 89. Says somewhere that higher than 89 octane may actually decrease performance.



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post #5 of 33 (permalink) Old 06-26-2003, 10:49 AM Thread Starter
 
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i'll make a switch and see what will be the difference in the mileage

so far, with the 93 gas, i get 300+ miles on city (without going crazy) and 400+ miles on highway (cruise the whole time)

i'll have some results in the next week (today i will put new gas)

Last edited by carma3tdr2000; 06-26-2003 at 02:58 PM.
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post #6 of 33 (permalink) Old 06-26-2003, 11:45 AM
 
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I use 91+ in my car now. it just runs better with it.
(I have also had the Heads shaved.. so the compression ratio is a little higher)
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post #7 of 33 (permalink) Old 06-26-2003, 11:57 AM
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91.....don't wnat to run any less when on the giggle gas.
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post #8 of 33 (permalink) Old 06-26-2003, 04:14 PM
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If you're running the stock 2.7, there's probably no reason to use anything more than 87. I run 87 on my first-gen 3.5, and I've had no problems (although Chrysler recomends 89 for this engine, it only really needs it in really cold weather).
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post #9 of 33 (permalink) Old 06-26-2003, 04:34 PM
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save your money and use the DC recommended 87 octane unless you have engine modifications that need the higher octane. Maybe run some 93 octane every ten tanks or so if it makes you feel better.
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post #10 of 33 (permalink) Old 06-26-2003, 05:25 PM
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Does anyone have any stories about octane booster? It may even be cheaper to get the additive every once in a while (like a night of expected racing) rather than fill up at premium all the time.
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post #11 of 33 (permalink) Old 06-26-2003, 06:05 PM
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Anything I've read about anyone using an Octane Booster in a 'trep has been negative. No increased performance, if anything - it's possible to have such a high octane as to get the engine to retard the timing further.
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post #12 of 33 (permalink) Old 06-26-2003, 06:11 PM
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Some of the 1st gen 3.5 owners have claimed success w/ octane boosters. I don't use em myself, but I do run with 91 octane most of the time.

edit: make that 93 octane, not 91... I filled up today and actually paid close attention for a change.

Last edited by argus; 06-30-2003 at 06:28 PM.
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post #13 of 33 (permalink) Old 06-26-2003, 06:13 PM
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Some first gens? Oh... Interesting.

That makes me curious then.

I'm happy on 87
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post #14 of 33 (permalink) Old 06-26-2003, 06:16 PM
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I'd probably give the octane boosters a try, but I figure if I got an extra $5 to blow at Texaco, I'm probably gonna buy a 6-pack instead. :p
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post #15 of 33 (permalink) Old 06-26-2003, 09:48 PM
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Higher octane is not filtered better or have more cleaners it is simply has a better ability to resist detonation. So if you car is not detonating you don't need it.
Avengers reply holds much truth since higher octane is a slower burning fuel so why burn a slower burning fuel?
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