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Old 05-19-2010, 04:38 PM   #1
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using higher octane on v6

manual says 87 octane.. can we use higher octane on our v6 and not damage engine? or is there really a difference between using 87 and 93
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Old 05-19-2010, 04:41 PM   #2
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I don't think you'll damage the engine, but you might blacken the plugs, while spending more than you should.
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Old 05-19-2010, 04:43 PM   #3
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I think the manual says something like 87 or higher. I have been putting 92/93 in since I got it and have not had a problem.
Go to this thread...Read post number 4...Should just about sum it up for you.
http://www.camaro5.com/forums/showth...t=v6+octane%27
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Old 05-19-2010, 04:47 PM   #4
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You can always go higher, but should never go lower.

Lower octane in cars not designed for it will cause engine knock due to fuel ignition outside of the combustion cycle.

You wouldn't think so, but lower octane fuel will ignite more easily, which is why it's not used in high compression engines.
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Old 05-19-2010, 04:58 PM   #5
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Originally Posted by Berean View Post
You can always go higher, but should never go lower.

Lower octane in cars not designed for it will cause engine knock due to fuel ignition outside of the combustion cycle.

You wouldn't think so, but lower octane fuel will ignite more easily, which is why it's not used in high compression engines.
In newer cars the engine has sensors that detect knock and will retard the timing accordingly so the engine isn't damaged. So you probably could run lower grade in there, but I would avoid it.
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Old 05-19-2010, 05:00 PM   #6
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My HHR SS requires (in the owners manual) 91 or higher octane. Now that's just a little 2.0L ecotec that's turbo charged.

If I had a 312hp V6 Camaro, I'd put 91 or higher in it. That's just my two cents. What are you saving by going with lower gas. $2.70 a fill up?
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Old 05-19-2010, 06:12 PM   #7
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If the ECM is set to maximize at 87 octane then you will actually loose power using a higher octane. Lower octane gasoline contains more BTU's of energy then higher octane.
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Old 05-19-2010, 06:16 PM   #8
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I've been using mid-grade or higher no problems here. And really the price for a fill up aint much more if ya think about
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Old 05-19-2010, 06:20 PM   #9
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Thats my thinking. At most 93 is 30 cents more than reg unleaded. So... 4-5 bucks mor eon a fillup max. If I can find 91, I use that, around here, with good gas stations, its 89 or 93...

I dont think it hurts the V6, would it affect gas mileage? Hell I dont know, the closest I am to a mechanic is when I am handing one money.
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Old 05-19-2010, 07:42 PM   #10
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lol. If you drive a V6 just fill with 87. No need to spend the extra money. Higher doesn't benefit you at all. Doesn't increase MPG, doesn't make it more powerful... I thought I should have used Premium on my V6 as well. But if the Manual says 87... just do as it says. =D
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Old 05-20-2010, 01:33 PM   #11
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Old 05-20-2010, 01:35 PM   #12
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As others have said, it's a waste of money to put higher octane fuel in the V6. It is designed to run on regular. You are throwing away money as you won't get any gains from higher octane fuel.
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Old 05-20-2010, 03:20 PM   #13
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Gasoline Factors That Matter
The quality of gasoline and the additive package usually affect the rate of engine wear more than the octane rating. Basically what this means is that it matters more where you buy your gas than which grade you purchase.

Regular Unleaded Gasoline
The recommended gasoline for most cars is regular 87 octane. One common misconception is that higher octane gasoline contains more cleaning additives than lower octane gas. All octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against engine deposit build-up. In fact, using a gasoline with too high of an octane rating may cause damage to the emissions system.

Mid-Grade Gasoline
The octane ratings 'regular', 'mid-grade', and 'premium' are not consistent. In the United States, for example, one state may require a minimum octane rating of 92 for premium gasoline, while another may allow an octane rating of 90 to be premium. Check the octane rating on the yellow sticker on the gas pump rather than relying on descriptive labels.


Premium Gasoline
Certain high performance engines benefit from use of high octane fuel. For other engines, using a fuel with a higher octane rating than the vehicle requires sends unburned fuel into the emissions system and catalytic converter. This puts unecessary stress on the emissions system. For some vehicles, a rotten egg smell coming from the tailpipe signals use of too-high octane gas.
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Old 05-20-2010, 03:24 PM   #14
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I've been using 91 since i bought it. actually, the dealer filled up the gas with 91 right before i picked her up.
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Old 05-20-2010, 03:40 PM   #15
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I know the manual for the v6 says to use regular, but i find it odd that the compression ratio is higher for the v6 than it is the v8. Doesn't the v8 recommend premium?
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Old 05-20-2010, 03:51 PM   #16
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I run 93 octane in mine when I am ready to take on a Mustang. Other than that I run 89.
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Old 05-20-2010, 03:55 PM   #17
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The V6 car was built to run on 87 octane. Running it higher isn't give you any added bonus to the car, you are just throwing your money away.
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Old 05-20-2010, 03:56 PM   #18
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I recommend the mid grade, Chevron or any other "cleaner" gasoline. I've tried all three for a spell, and prefer the mid grade. You can feel a difference.
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Old 05-20-2010, 03:56 PM   #19
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Call me el cheapo i put in 87 oct with dino oil. The whole reason i bought this ride was its a cheaper daily driver.
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Old 05-20-2010, 04:17 PM   #20
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Quote:
Originally Posted by PoorMansCamaro View Post
I know the manual for the v6 says to use regular, but i find it odd that the compression ratio is higher for the v6 than it is the v8. Doesn't the v8 recommend premium?

The manual says at least 91 for the V8.
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Old 05-20-2010, 04:21 PM   #21
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Originally Posted by jagan323 View Post
lol. If you drive a V6 just fill with 87. No need to spend the extra money. Higher doesn't benefit you at all. Doesn't increase MPG, doesn't make it more powerful... I thought I should have used Premium on my V6 as well. But if the Manual says 87... just do as it says. =D
some of us 6'ers have noticed the ECM pulls more timing running 87 than 93 at WOT.
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Old 05-20-2010, 04:28 PM   #22
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Bottom right hand corner is the Knock Retard... with 87 Octane the knock sensors are VERY ACTIVE! This is just cruising around! Not even getting on the throttle very hard!!



So while the car may run on 87 octane it doesn't appear to be living up to its full potential, especially if it is constantly pulling timing... I run premium and the knock sensors basically sits at zero...
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Old 05-20-2010, 04:30 PM   #23
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Bottom right hand corner is the Knock Retard... with 87 Octane the knock sensors are VERY ACTIVE! This is just cruising around! Not even getting on the throttle very hard!!



So while the car may run on 87 octane it doesn't appear to be living up to its full potential, especially if it is constantly pulling timing... I run premium and the knock sensors basically sits at zero...
You the Man, Scrming!!! I totally agree.
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Old 05-20-2010, 04:37 PM   #24
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I run 91 on my V6, mpg went up by 2mpg from 87, the engine sounds less raspy also, and I trust scrming about the knock sensors
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Old 05-20-2010, 04:47 PM   #25
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i read on here that with 89 you get 1, or 2 extra horses than with 87.
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