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Mechanical Maintenance: Break-in / Oil & Fluids / Servicing Discussions on mechanical maintenance and servicing of your Camaro

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Old 06-18-2013, 09:58 AM   #1
DRKS1D3

 
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Running 87 Octane in your SS all the time???

Here's the thread (page 2 towards the bottom): http://www.camaro5.com/forums/showthread.php?t=302162

I'm not trying to call this guy out (suzook), but he claims he runs 87 in his SS all the time because most gas stations have 87 in their 93 pumps anyways. Also, he claims it doesn't make that big of a difference in performance. Does anybody else do it? I've always run 93 in mine from day one and read all about the fuse pull. If folks are trying to save money, why not just buy a V6 and run 87 all day? You buy a $45 SS, then fill it with 87 to pinch a few pennies? What are your thoughts?
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Old 06-18-2013, 09:59 AM   #2
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Old 06-18-2013, 10:02 AM   #3
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Like the owners manual says it's "top tier" 91-93 octane for my baby. Most of time I use my Shell credit card and get 91 but whatever it's top tier fuel with the extra additives for me.
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Old 06-18-2013, 10:04 AM   #4
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I raise you two facepalms
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Old 06-18-2013, 10:07 AM   #5
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...lol...It's not the end of the world...In fact, I would bet there are more V-8s running on regular than you would think...These aren't Porsches or Ferrarris...lol...

If you notice a ping on regular, then damage may occur to the engine over time...and higher octane is recommended...

As far as the pumps go, you're gonna get some regular from the hose if that's what the guy ahead of you used...lol...

If your car runs fine on regular, have at it....Maybe not getting all you could for performance, but if it's enough for some, no biggie...Your car isn't gonna blow up if a tank of regular is put in accidently, they are made to run on all grades...

Just sayin', I wouldn't do it, but if it happened for whatever reason, no big deal...
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Old 06-18-2013, 10:13 AM   #6
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I raise you two facepalms
My car would destroy itself on 87..
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Old 06-18-2013, 10:16 AM   #7
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Old 06-18-2013, 10:33 AM   #8
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I'm certainly not an authority but I know that "ping, ping, ping" means pre-detonation or that even with the computer retarding the spark the fuel you are burning is going to eventually burn a hole in the top of your piston. With 91 or better I know that my engine is advancing it's spark and I'm getting the best performance and mileage I can plus all the top tier additiives for a clean fuel system and exhaust system. Just my O'l Fart opinion.
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Old 06-18-2013, 10:35 AM   #9
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I'm still stock I'd go for some 87 if I was taking a cross country trip or something. I usually only take mine on joyrides though..... spirited, redline inducing joyrides.

About this rumor of stations not selling you what you are paying for? I'm sure it happens from time to time. It's just like any other crime, to most it's not worth the risk.
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Old 06-18-2013, 10:43 AM   #10
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I used 93 in my V6 and noticed a difference, enough said!
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Old 06-18-2013, 10:46 AM   #11
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If you are out and gas light on, only one station within 75 miles and they only have 87, not going to hurt a thing, i just wouldn't beat on it like usual...however since it clearly states in the manual to not use 87 then of course I don't see how it could be good for it on a regular basis.
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Old 06-18-2013, 10:49 AM   #12
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I don't claim to run 87...I Do. But I never said most have 87 in the 93 pumps....it does happen though....quite often.

Quote:
Originally Posted by DRKS1D3 View Post
Here's the thread (page 2 towards the

bottom): http://www.camaro5.com/forums/showthread.php?t=302162

I'm not trying to call this guy out (suzook), but he claims he runs 87 in his SS all the time because most gas stations have 87 in their 93 pumps anyways. Also, he claims it doesn't make that big of a difference in performance. Does anybody else do it? I've always run 93 in mine from day one and read all about the fuse pull. If folks are trying to save money, why not just buy a V6 and run 87 all day? You buy a $45 SS, then fill it with 87 to pinch a few pennies? What are your thoughts?
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Old 06-18-2013, 10:56 AM   #13
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First, its not going to hurt the car to run the lower grade fuels, except for the fact that I believe the premium grade fuels are of a higher quality as well as being a higher octane, so components like injectors, pumps, and the like live longer on a steady diet of premium fuel than they will the lower grades. Our cars have a 19 gallon tank. There is a 20 - 30 cent difference between regular and premium, so on a complete fill up, you are looking at $3.80 to $5.70 difference on tank cost. Even if you fill up once a week, you are looking at an annual savings of about $250 per year. It does not seem worth it to me...to each his own!
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Old 06-18-2013, 10:58 AM   #14
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You will get a degradation in performance if you run 87 octane fuel in the LS3/L99 vehicles. You can run it if you want to, but know that you'll never get peak performance out of it.

Will it damage anything? Not on a stock configuration. The ECM will back off the timing to prevent detonation (hence, loss of performance), and that protects the engine.

91 vs 93 makes little difference. If you are tuned, then the minimum octane will depend on the level of tune you have. Bare minimum is usually 91.

The LSA (ZL1) engines cannot run less than 91 octane, period. Being supercharged adds a layer of risk if 87 octane is used. So, don't do it.
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Old 06-18-2013, 11:03 AM   #15
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First, its not going to hurt the car to run the lower grade fuels, except for the fact that I believe the premium grade fuels are of a higher quality as well as being a higher octane, so components like injectors, pumps, and the like live longer on a steady diet of premium fuel than they will the lower grades. Our cars have a 19 gallon tank. There is a 20 - 30 cent difference between regular and premium, so on a complete fill up, you are looking at $3.80 to $5.70 difference on tank cost. Even if you fill up once a week, you are looking at an annual savings of about $250 per year. It does not seem worth it to me...to each his own!
Exactly my thoughts too. I want the logic behind it. Trying to save money, don't care, something else? If folks want to save money, bypass the Camaro SS and pick up a Chevy Spark.
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Old 06-18-2013, 11:07 AM   #16
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I run diesel in mine no difference in performance and I get great mileage
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Old 06-18-2013, 11:16 AM   #17
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I run diesel in mine no difference in performance and I get great mileage
Lol
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Old 06-18-2013, 11:25 AM   #18
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I run diesel in mine no difference in performance and I get great mileage
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Old 06-18-2013, 11:44 AM   #19
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Problem with running low quality low octane gasoline is your car will be locked into low octane mode even if you decide to run 91+ so you will not feel a difference in power since you are still running timing for low octane. You would have to a fuse pull every fill up of higher quality higher octane fuel.

I locked mine in high octane mode all the time. It never runs lower timing.

This post I made in a fuse pull thread but it still explains why people that run shit gas don't feel the power increase when running better gas. There IS a difference.

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There is two octane timing tables.
High octane table Low octane

High octane will have the most advance timing under part throttle and wide open throttle.
Which will give you the most horsepower and torque.

Low octane will be the lowest advance timing under part and wide open throttle.
There will be a reduction in power on this mode.

What the PCM does is watch the knock sensor to determine what mode to use. If you have good gas, 91 or above. The engine can run the high octane map without knocking or needing to reduce timing. What happens when you run lower quality gas like 89 or below, or maybe even low quality 91. You can and will start to knock, it will not be something you will hear but the PCM will notice and reduce timing to an appropriate amount to protect the engine from pre destination or knock. If the PCM logs that it is pulling timing for extended amounts of time or pulling timing severely enough, the PCM will go to the Low Octane table to reduce the maximum amount of timing to combat the knock from the lower octane fuel. This will cause a drop in power as well.
What the camaro does as soon as your PCM moves to the Lower Octane table it will NOT move back. So you could be driving it around with high octane fuel in the tank but the pcm is still in low octane mode. If this happens you won't have the extra power or benefit of high octane fuel.
When you pull the fuse it allows the PCM to reset and it will use the high octane mode until it needs to switch again.

I dumbed it down so I hope it still makes sense.
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Old 06-18-2013, 11:52 AM   #20
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Old 06-18-2013, 11:54 AM   #21
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Personally I did not buy the Camaro to pinch pennies, I prefer to work my butt off so I can always treat her nice. Wouldn't running 87 octaine also gunk your engine up more because it is not burning off at the rate of 93?

As far as 87 in the 93 slot at the pumps, you're using the same pump to obtain 3 different octaines of gas, you will get some left over of what the person before used. As well I suppose it is possible to get all 87 when paying for 93, have you never gotten a Sprite in a vending machine when you clicked for a Coke?
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Old 06-18-2013, 12:02 PM   #22
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Quote:
Originally Posted by DRKS1D3 View Post
Here's the thread (page 2 towards the bottom): http://www.camaro5.com/forums/showthread.php?t=302162

I'm not trying to call this guy out (suzook), but he claims he runs 87 in his SS all the time because most gas stations have 87 in their 93 pumps anyways. Also, he claims it doesn't make that big of a difference in performance.... You buy a $45 SS, then fill it with 87 to pinch a few pennies?
You know you contradicted yourself there. Anyways, I would just run 93.
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Old 06-18-2013, 12:11 PM   #23
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You know you contradicted yourself there. Anyways, I would just run 93.
How did I contradict myself? I gave a brief synopsis of the topic and asked what others thought of this member's logic.
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Old 06-18-2013, 12:13 PM   #24
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Saying most filling stations use 87 in all their tanks is a myth. There are some no doubt, BUT...

There are VERY tight restrictions and if a station is caught doing that or giving less fuel than advertised for the price, the fines are HUGE and the state can shut them down.
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Old 06-18-2013, 12:24 PM   #25
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If 91-93 is too expensive to put in your Camaro, then more then likely the Camaro is too expensive as well..
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