Question regarding Octane fuel for LFX - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Pro Bro · 02-01-2014, 10:34 PM

I live in California and she came with a full tank of 87 from a Shell Gas station next to the dealership.

I've toyed with full tanks of 87 and 91 and felt a minor difference it seems.

Am I crazy here?

Does the LFX adjust for the higher octane? I've ridden it to low fuel light and filled her up twice with 87 and then done it with 91.

Any of you V6 Veterans want to set me straight on this? Cannot really find much info on the web (one half says it makes a difference, the other half saying its a waste of money).

CamaroGuyDave · 02-02-2014, 01:12 AM

The LFX does asjust to different octane. I personally use mid grade. 89 octane. The manual says to use 87 or better.

Pro Bro · 02-02-2014, 01:42 AM

Quote:

Originally Posted by CamaroGuyDave

The LFX does asjust to different octane. I personally use mid grade. 89 octane. The manual says to use 87 or better.

Thats good to hear. Is there any particular difference between top tier gas stations other than detergents?

Say Shell/76/Chevron/Arco?

yzark99 · 02-02-2014, 10:44 AM

Don't let your gas gauge get below 1/4 tank. The fuel pump is cooled by sitting in gasoline; and if the tank level gets too low it will overheat and die, and you get to buy a new one.

I use 87, and it works fine. If I wanted to waste money on higher octane I would have bought the v8. Detergent is worthless in direct injection engines; so get the cheapest gas that works for you.

Kessler · 02-02-2014, 10:58 AM

I use the higher octane if I know I will burn it out in 1 go, like freeway. If I am going to do a lot of stop and go in town, or idle at lights, then its 87...

It seems to go farther if you stay at speed on 1 tank..

skibik · 02-02-2014, 11:09 AM

I tried 91 octane and I never seen any difference. The station I fill at even dropped from 89 to 87 and I haven't seen any change. The 91 octane fuel here is about $.75 or more a gallon so I couldn't see paying the extra money for it just to get what may only be a psychological difference. JMO.

Dean.

KaBoom1701 · 02-02-2014, 11:50 AM

I've always used 91 from day one and never had any issues or problems.

Pro Bro · 02-02-2014, 02:51 PM

Well I've gone and started a mess here. The premium is only 20 cents more than the regular here in California.

You guys are saying, with the same driving, I will not see an minor increase in mpg?

14CV6 · 02-02-2014, 06:00 PM

I have always used 93 octane from day one like others, I believe if you are going to throw performance mods on the vehicle and run the vehicle hard, it is better to have the higher octane.

DSX_Camaro · 02-02-2014, 06:17 PM

Being that the engine pulls significant timing on low octane, you can view it as bring designed for higher octane. Particularly due to the high compression. (Direct injection works to prevent detonation, to justify the other side of the argument).

Personally I only use 93. I hate the feel of having 87 in my car, its definitely a little mellower in the high end, and fuel mileage.

WndWarrior · 02-02-2014, 09:34 PM

I too have used both, no difference noticed with performance. I wouldn't use any cheap gas in my car. Even my mechanic suggests only top tier gas, 87 for our LT's.

PlainEnvelopes · 02-02-2014, 09:43 PM

Quote:

Originally Posted by Pro Bro

Thats good to hear. Is there any particular difference between top tier gas stations other than detergents?

Say Shell/76/Chevron/Arco?

In my opinion always use top tier gas station. I have noticed huge differences in every car I have owned.

My opinion only I have chevron as my first choice then shell and 76.(I try to always use chevron) I have heard way to many horror stories from my dad, when people would bring cars into his dealership that have used junk gas.....what does 5-10 cents a gallon really save you. Two bucks.......my two cents.

Pro Bro · 02-02-2014, 11:12 PM

Quote:

Originally Posted by PlainEnvelopes

In my opinion always use top tier gas station. I have noticed huge differences in every car I have owned.

My opinion only I have chevron as my first choice then shell and 76.(I try to always use chevron) I have heard way to many horror stories from my dad, when people would bring cars into his dealership that have used junk gas.....what does 5-10 cents a gallon really save you. Two bucks.......my two cents.

Thats good to hear, getting my Chevron gas card soon anyway, tired of lugging around a bunch of cash to pay up every 2 weeks.

Arco gas apparently isnt top tier, and I have noticed I am burning through its 91 slightly faster than the Chevron or 76 I mostly use (base this off of three full tanks and my mpg computer readings).

DagoCountyGee · 02-03-2014, 08:44 PM

I put 87 gas one time and it got me 16 mpg's. I always get 18 mpg's with 89 octane. When I put 91 I get 19-20 mpg's. Like you said it's only 20 cents more so why not. Oh and I only use chevron or shell.

02-01-2014, 10:34 PM	#1
Pro Bro Drives: 2018 Camaro 2SS, Garnet Red Join Date: Jan 2014 Location: Bay Area, CA Posts: 81	Question regarding Octane fuel for LFX I live in California and she came with a full tank of 87 from a Shell Gas station next to the dealership. I've toyed with full tanks of 87 and 91 and felt a minor difference it seems. Am I crazy here? Does the LFX adjust for the higher octane? I've ridden it to low fuel light and filled her up twice with 87 and then done it with 91. Any of you V6 Veterans want to set me straight on this? Cannot really find much info on the web (one half says it makes a difference, the other half saying its a waste of money).

02-02-2014, 10:44 AM	#4
yzark99 I run 2 catch cans... Drives: 2012 1LT SIM Auto Join Date: Oct 2011 Location: OR there Posts: 1,038 View My Garage	Don't let your gas gauge get below 1/4 tank. The fuel pump is cooled by sitting in gasoline; and if the tank level gets too low it will overheat and die, and you get to buy a new one. I use 87, and it works fine. If I wanted to waste money on higher octane I would have bought the v8. Detergent is worthless in direct injection engines; so get the cheapest gas that works for you. __________________ Overkill tuned • Air Scoop • CAI • VMAX PTB • JacFab Laminator FX + Extendolator • SOLO Hi-Flo Cats + Cat-Back Exhaust View my top 3 LFX performance mods and more: .

02-02-2014, 10:58 AM	#5
Kessler Drives: 2012 IOM 2LT RS A6 w/ BA Join Date: Apr 2013 Location: Central Valley, Ca Posts: 123	I use the higher octane if I know I will burn it out in 1 go, like freeway. If I am going to do a lot of stop and go in town, or idle at lights, then its 87... It seems to go farther if you stay at speed on 1 tank.. __________________ ToDones - Apex Scoop & Washer Relocate - CAI cai - Elite CC - Elite Clean Side Separator - MRT v1 Axle Back customized w/ J-Pipes - Black Out Headlight/Tail Light - Black Out BowTies - Black Out 'camaro' - Black Out Brake Light Chrome Bezel - JL Audio XD400/4 - Sub Thump Sub Box 2 DVC 10"s - HIFONICS ZEUS 1000.1 Escort Redline - VIOFO Dash Cam - Continental Extreme Contact Tires Gary's Customs ZL1 Front Bumper, ZL1 Rockers, & ZL1 Spoiler - Paint matched IOM OverKill 80mm T-body - JacFab Ported Intake Manifold - JacFab Extendolator 3/4" Spacer ToDos - Tune?

02-02-2014, 11:50 AM	#7
KaBoom1701 KaBoom1701 Drives: 13' ZL1 Red M6 Join Date: Dec 2012 Location: I.E. SoCal (Yucaipa) Posts: 8,630	I've always used 91 from day one and never had any issues or problems. __________________ Mods: Roto-Fab Intake, WW Res. kit & Big Gulp Air Scoop, Elite Catch Can, ATI Super Damper & 18% OD Pulley, LF Idler pulley bracket, Metco CC breather, ID850 Injectors, Stainless Power Headers w/ ceramic coating, TR71X Spark Plugs, JMS Fuel Pump Booster, Bo White TB, Tuned by Ted @ Jannetty Racing, Ron Davis HX, D3 Reservoir, Pfadt 1" Springs, Moreno Camber Plates, ZL1 Addons Splitter guard washers, Tow Hook kit & rock guards, Hurst Shifter Billet Plus 6 Speed Short Shifter, ZL1 DRL lighting harness, ZL1 Recaro Seats.

02-02-2014, 06:00 PM	#9
14CV6 Tri-County Camaros Drives: 2014 Camaro V6 Join Date: Nov 2013 Location: Venice, FL Posts: 147	I have always used 93 octane from day one like others, I believe if you are going to throw performance mods on the vehicle and run the vehicle hard, it is better to have the higher octane. Last edited by 14CV6; 02-08-2014 at 08:16 PM.

02-02-2014, 01:12 AM	#2
CamaroGuyDave Drives: 2013 1LT A6 Join Date: Mar 2013 Location: Lewisville, TX Posts: 108	The LFX does asjust to different octane. I personally use mid grade. 89 octane. The manual says to use 87 or better.

02-02-2014, 11:09 AM	#6
skibik Guest Drives: bbbbbb Join Date: Dec 2012 Location: bfe Posts: 713	I tried 91 octane and I never seen any difference. The station I fill at even dropped from 89 to 87 and I haven't seen any change. The 91 octane fuel here is about $.75 or more a gallon so I couldn't see paying the extra money for it just to get what may only be a psychological difference. JMO. Dean.

02-02-2014, 02:51 PM	#8
Pro Bro Drives: 2018 Camaro 2SS, Garnet Red Join Date: Jan 2014 Location: Bay Area, CA Posts: 81	Well I've gone and started a mess here. The premium is only 20 cents more than the regular here in California. You guys are saying, with the same driving, I will not see an minor increase in mpg?

02-02-2014, 06:17 PM	#10
DSX_Camaro Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013 Location: Orlando, FL Posts: 1,741	Being that the engine pulls significant timing on low octane, you can view it as bring designed for higher octane. Particularly due to the high compression. (Direct injection works to prevent detonation, to justify the other side of the argument). Personally I only use 93. I hate the feel of having 87 in my car, its definitely a little mellower in the high end, and fuel mileage. __________________ K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler

02-02-2014, 09:34 PM	#11
WndWarrior Drives: 2013 1LT/RS Join Date: Jul 2013 Location: Santa Clarita, Ca. Posts: 119	I too have used both, no difference noticed with performance. I wouldn't use any cheap gas in my car. Even my mechanic suggests only top tier gas, 87 for our LT's.

02-03-2014, 08:44 PM	#14
DagoCountyGee Drives: '15 SS Join Date: Sep 2012 Location: North County Posts: 1,235	I put 87 gas one time and it got me 16 mpg's. I always get 18 mpg's with 89 octane. When I put 91 I get 19-20 mpg's. Like you said it's only 20 cents more so why not. Oh and I only use chevron or shell.