Which type of gas should i use for my camaro

[PoorMansCamaro]

Originally Posted by cam fan

The LLT engine is not a high compression engine (relative pressure from fuel combustion reaction). Therefore the chemical structure of 87 octane gasoline as opposed to a higher one would burn with greatest efficiency. The combustion reaction does not provide more joules of energy if given a larger compound. HOWEVER, if you add a supercharger or a turbo, you change the dynamic of the combustion reaction to one of higher compression ratios. This new dynamic benefits from the larger gasoline molecule.

the LLT has a higher compression ratio than the LS3 and L99...

LLT - 11.4:1
LS3 - 10.5:1
L99 - 10.4:1

OP, use Premium if your wallet allows.

[GroundhogSS]

The brand of gas you use does make a difference. I spent some time last week visiting with a transport driver as he was filling the tanks at a grocery store gas station. He showed me his clip board with the orders listed. The grocery stores and independents get "unbranded" gas that has no additives. He compared it to burning wood in your car. The majors get the gas with the additive packages. His next run was to a shell station and when he enters the code for Shell at the distribution center, it puts the proper blend of gas in the truck for Shell. I usually stick with Shell or Chevron. As long as you have the correct octane gas, you're fine.

[Mach]

Originally Posted by Jrichards73

My lawn mower uses 93 octane or it voids the warrantee, what do you wanna use in your car?

[Mach]

Regular is just fine. Don't waste your money.

[TooCool5]

Originally Posted by GroundhogSS

The brand of gas you use does make a difference. I spent some time last week visiting with a transport driver as he was filling the tanks at a grocery store gas station. He showed me his clip board with the orders listed. The grocery stores and independents get "unbranded" gas that has no additives. He compared it to burning wood in your car. The majors get the gas with the additive packages. His next run was to a shell station and when he enters the code for Shell at the distribution center, it puts the proper blend of gas in the truck for Shell. I usually stick with Shell or Chevron. As long as you have the correct octane gas, you're fine.

No name gas has minimum detergents required by law.
Top Tier gas has increased detergents no matter what grade you buy.
They are the only ones approved by GM.

[KrisWithaCamaro]

Originally Posted by Comrando

Medium with a V6.
Premium V8
Lowest grade 4 banger

What is "medium"?

[iHasCamaro]

11.4:1 CR is high for a street motor. The LLT has direct-injection and variable valve timing so it can control the combustion and compensate for knock better, but why not just run premium and not make your engine work so hard? That way you'll know you are running in the safe zone instead of having your engine constantly compensating for knock, and possibly robbing power and damaging your engine over time. Even if it's fine for every-day commuting, on a hot day or if your engine gets heat-soaked, it is more likely to pull ignition timing and/or valve timing and/or add more fuel.

The best way to compensate for knock is not to have it in the first place. Engines knock because the air/fuel mix is igniting when the piston is still on its way up & so tries to force the piston backwards. I never want my engine to knock regardless of how well it is compensated for.

All the people saying to save your money and just buy regular might be going by the manual, but unless it's backed up by ECU logs showing the engine using the high-performance maps with 0 counts of knock, I would take their opinions with a grain of salt. It's POSSIBLE the LLT has no knock w/ regular driving in AZ on a track day when it's 110 degrees, but I would bet money that it has knock and compensates for it.

[Wizard1183]

If youre using the cheapest gas, might as well stay with it. If you want optimal fuel management, buy Shell regular. See how many mpg you get, then fill up with plus and see how many mpg you get. Whichever gives you more use that one. If theyre about the same regualr is good enough.

[kuvo]

Originally Posted by Jrichards73

Ideally is right you can't find Ethanol-free, that's why the Premium as it has the smallest ratio. It is really bad on smaller engines, like the GC190 on my Honda HRX... Now if it was build for e85 than great, but it isn't...

Actually you can find many gas stations which sell ethanol-free
Here's a site that shows you e-free gas stations for every state.

http://pure-gas.org/index.jsp?stateprov=WA

[ScorpionSingh]

I have Camaro LS 2012.... I know the manual recommends using regular gas with 87 octane but I notice clicking sound from the engine in 3rd and 4rth gear when I accelerate fast using regular gas. Then I tried using midgrade and premium. Same acceleration in 3rd gear and no more clicking sound. I been using midgrade for a while now. I also feel the camaro performs better in terms of speed, and acceleration while using midgrade. Even engine sounds better. Also tried using regular from good gas stations like BP, Shell, Chevron but engine still clicks on regular 87 octane gas. Not sure the gas in Virginia is of poor quality or chevy needs to fix their owner's manual. USE MIDGRADE AND YOU WILL FEEL THE DIFFERENCE.

[jkchambless]

Originally Posted by scrming

LLT will run on 87... HOWEVER it will not be at it's optimal performance... With 87 the LLT's knock sensors will start pulling timing, reducing performance. We've gone over this time and time again... The LLT is basically "over sparked" and relies on the knock sensors to pull the timing back when you are running lower octane fuels... There are a number of threads in the V6 bolt-on section...

This, again? What he said......look in the V6 section...this has been discussed ad nauseum.

[dkp2LT]

Originally Posted by jkchambless

This, again? What he said......look in the V6 section...this has been discussed ad nauseum.

Another 'what type of gas' thread means a 'what do you pay for insurance' thread is around the corner!

[MichaelH]

i run premium in everything yea its more expensive, but the way i look at it is that its not even a big difference in price (couple dollars at the end) and you get a pieceof mind running 93

[RubyCamaro]

Depends. You wanna run cheap or you want the best performance from your Camaro? For me, I will just use 93.

[Baba]

Although the V6 only requires "Regular" (87 Oct.), I found my manual was somewhat sluggish upon acceleration and I even posted some questions as to whether this was "normal" behavior for the 2011 V6 w. the manual trans.

5 months after I purchased my 2LT 'vert, I decided to use premium 93 Oct. and see whether that would improve "performance". Although it has not improved my gas-mileage, it most certainly has improved my 2LT's performance (beyond a mere "perception", thereof).

I believe the engine responds noticeably more quickly and evenly to acceleration. For me, the improved performance makes my driving experience more enjoyable, therefore worth every penny, to me.

[Bobaloo]

Groundhog: You got it right!!!

[jd10013]

Originally Posted by woodj

Definition of "Octane Rating":

"Octane" is colloquially used as a short form of "octane rating" (named for the ability of octane's branched-chain isomers, especially isooctane, to reduce engine knock).

Definition of "Engine Knock":

Knocking occurs when combustion of the air/fuel mixture in the cylinder starts off correctly in response to ignition by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front. The fuel-air charge is meant to be ignited by the spark plug only, and at a precise time in the piston's stroke cycle. Knock occurs when the peak of the combustion process no longer occurs at the optimum moment for the four-stroke cycle. The shock wave creates the characteristic metallic "pinging" sound, and cylinder pressure increases dramatically. Effects of engine knocking range from inconsequential to completely destructive.


So, no knocking, no need to run premium. It's not really a "macho" thing to say you run premium.

your car isn't going to knock regardless, even the V8 wouldn't. the computer will adjust the fuel air ratio and advance/retard the timing to prevent it. however, those changes are most definitely going to effect performance.

[jd10013]

Originally Posted by cam fan

The LLT engine is not a high compression engine (relative pressure from fuel combustion reaction).

at about 12:1 I'd say it is.

[TooCool5]

Originally Posted by trooper182

Unless you really don't care about your money then go with premium. All the V6 needs is regular. You will not see any improvements if you go with Premium other than a lighter wallet.

^^This^^

[jd10013]

Originally Posted by kuvo

Actually you can find many gas stations which sell ethanol-free
Here's a site that shows you e-free gas stations for every state.

http://pure-gas.org/index.jsp?stateprov=WA

most are marina's, and the list shrinks every day. the government requires refiners to use a certain amount (gallons) of ethanol, and that goes up every year. it's why your starting to see 15% blends show up. just about everything is at 10% now, and the only way to increase the gallons used is to increase the blend. this is becoming especially difficult for refiners as the amount of gas being used has been decreasing.

[HeritageLS]

Run a tank of regular and a tank of premium. See what feels better. You won't be faster but I personally feel the car runs a bit smoother with the higher octane. It's all personal preference with the 6. If you don't notice a difference or don't care then save the money.

[45thCAMARO 2SS/RS]

I use premium, burn better & you can fill the difference but yet again I have a v8 but honestly u only pay maybe an extra 4-5 bucks more by going with the 91 octane I tried it already and I only useChevron or Shell, but that's just me & my 2 cents.

[Sleez]

mine gets slightly better mileage using Super, when I figure my mileage in miles per dollar, it usually works out to a wash between Reg and Super, so I use Super every time now.

I have kept track of every drop of gas, and every mile put in a spreadsheet to calculate MPG and MP$
YMMV lol