So I put super gas in my v6 for the first time - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Murph0408 · 10-23-2010, 05:02 PM

lol you guys are funny

87 octane. that is what the engine takes. you're just wasting your money otherwise. i was skeptical but even the guys at chevy confirmed it.

"oh i swear it feels faster" please. it's all mental. it's like when people drink a buncha beers and start acting all drunk, until somebody informs them it was non-alcoholic.

Johnnyma45 · 10-23-2010, 05:12 PM

Quote:

Originally Posted by Murph0408

"oh i swear it feels faster" please. it's all mental. it's like when people drink a buncha beers and start acting all drunk, until somebody informs them it was non-alcoholic.

Haha..."placebo effect", is the clinical term. I'll stick with 87, I'm sure the placebo effect is worth it but I'll save some $$$.

TonyNo · 10-23-2010, 05:18 PM

Heh. My car does run better with premium...

One Example: On an uphill grade, under light acceleration, low-octane fuel causes surging. Premium eliminates that.

The bad thing is that it did nothing for my quarter time.

Dreamer2005 · 10-23-2010, 06:18 PM

Quote:

Originally Posted by Murph0408

lol you guys are funny

87 octane. that is what the engine takes. you're just wasting your money otherwise. i was skeptical but even the guys at chevy confirmed it.

"oh i swear it feels faster" please. it's all mental. it's like when people drink a buncha beers and start acting all drunk, until somebody informs them it was non-alcoholic.

it is a waste to use higher than 87. It is all a mental thing like he said. Like how you feel after you wash your car or put a nice coat of wax on it, or after an oil change. Somehow it feels faster.

rydahog · 10-23-2010, 06:24 PM

If you use 89 oct...and 1/2 92 octane...it will equal out to approx 1/2 lets say 90..for agruments sake...so you can mix and match.

zen · 10-23-2010, 06:42 PM

If you use a single nozzle dispenser the middle grade is mixed in the dispenser. 50% high octane and 50% low octane. So mixing it in your tank is immaterial.

scrming · 10-23-2010, 06:52 PM

This subject has been beaten to death...

The ECU in the LLT is "over-sparked" and relies on the knock sensors to pull the timing back. This is very obvious in my data logs. With 87 octane the knock sensors are VERY ACTIVE! Check the video and watch the bottom right corner which is "Spark Retard" from the knock sensors:

When I run 93 octane the knock sensor are almost totally inactive! Spark Retard is almost constantly 0! So with 93 octane I'm running more timing which mean more power... And in fact we had one guy here with a shop that actually tested this on his dyno and showed that higher octane did make more power... The ECU basically adapts to the higher octane by constantly trying to add more timing until the knock sensors kick in...

at this point either you believe it or you don't... I've seen the data logs...

MillerTime · 10-23-2010, 07:03 PM

Faster no. Smoother yes. your engine will perform better with higher octane every time. performance encompasses more than just HP...

Dreamer2005 · 10-23-2010, 07:05 PM

and it will be beaten to death some more. Just the nature of forums....one side believes one thing, the other side believes another, the middle side gets a dashhawk. I had one of those things on my EVO when I still had it....trapped at 12.66 but the hawk said 11.33 or something like that. Bunch of my Honda lovin friends loved it though. Saved them thousands on expensive mods they didnt need. The hawk drops your time in an instant.

But it is good for monitoring stuff.

VR Baron · 10-23-2010, 07:07 PM

Don't know about making car faster but I used 91 awhile back when I had the Airaid V1 which leaned the car and is said to pull timing from the leaning out, and basically ran worse then stock. The 91 gave it more throttle response and smoother, guess helped restore some of the lost timing from the Airaid. Now with the car broken in and the mods I have I have switched back and forth to see if noticable and really can't tell, maybe just a bit smoother. The biggest change came when I changed brands of 91,I was using Shell near my house but switched to a Chevron further away and that was noticable! I guess that particular Shell just had worse quality gas is all, and cost more too! Next time I will try the 87 from Chevron to see if any different and will report in. one thing I have noticed as well is that I have less soot in the tail pipes from the Chevron which is good.
Performance wise the car runs great. Today with the second tank of Chevron in we went to the beach for our walk and there is a section of PCH we make a u turn on to get to where we park. The road is a 60 zone, so as I make the turn, slow to a stop and in sport mode stand on it through 73 before letting off the gas, only place I can even do that. What I noticed for the first time is 1-2 shift was a bit firmer and 2-3 shift was nice and firm, more then usual as if there was a shift kit in! felt great! Car hits about 63 then shifts to 3rd and 73 comes up really fast.
I don't know if it was the gas or cooler, damp air or both but the car seems to like it. Will see if it continues after the 87 goes in.

FYI there are dyno runs from a shop in VA who tested the 87 vs 93 in hot weather I think in Aug, and the car made more low to mid range power and some on top to on the 2nd, cooler run. Might check it out for whait it's worth.

Lucky SOB · 10-23-2010, 07:07 PM

You're all wasting your money... GM engineers did not design your car for 91,93 etc...

scrming · 10-23-2010, 07:19 PM

Quote:

Originally Posted by Lucky SOB

You're all wasting your money... GM engineers did not design your car for 91,93 etc...

Of course they didn't design it that way since they would have a hard time selling a V6 that requires premium to the public... That doesn't mean it won't run better on premium! They ideas are not mutually exclusive! The car runs fine on 87! However due to the fact that the car is "over-sparked", it let's the car adapt to higher octane! The key is the knock sensors!

Looking back through my data logs at WOT with 87 octane the car would lock in at about 22 to 24 degrees of timing... with 93 octane the car is locking in with about 29 degrees of timing!

And as blackbee mentioned there was those dyno test, which I can't seem to find

I've seen the data logs... I've seen the dyno sheet... I've talked to the GM engineers... I know 93 makes a difference...

devildoc · 10-23-2010, 07:20 PM

I run 93 in the car a majority of the time, and as Scrming has stated, along with several others higher octane and this car are made for each other! I, myself, know this almost better than most people. With my mods my spk rtd was so high along with my timing. I was losing almost 30hp with 87oct. Gained it back with the 93 + timing adjustments. People can believe what they want, it's your personal vehicle do to it as you wish. Tell me how I go from a 14.5sec 1/4mi w/ 87 to a 14.04 w/ 93? The 14.5 was an even better DA than the 93!

Stett · 10-23-2010, 07:43 PM

Starting Page 8-43 in the owners manual:

Fuel

Use of the recommended fuel
is an important part of the proper
maintenance of this vehicle. To help
keep the engine clean and maintain
optimum vehicle performance, we
recommend the use of gasoline
advertised as TOP TIER Detergent
Gasoline.
Look for the TOP TIER label on the
fuel pump to ensure gasoline meets
enhanced detergency standards
developed by auto companies. A list
of marketers providing TOP TIER
Detergent Gasoline can be found
at www.toptiergas.com.

Driving and Operating 8-43

The 8th digit of the Vehicle
Identification Number (VIN) shows
the code letter or number that
identifies the vehicle’s engine.
The VIN is at the top left of the
instrument panel. See

Vehicle
Identification Number (VIN) on
page 11-1.

Recommended Fuel

If the vehicle has the 3.6L V6 engine
(VIN Code V), use regular unleaded
gasoline with a posted octane rating
of 87 or higher. If the octane rating is
less than 87, you might notice an
audible knocking noise when you
drive, commonly referred to as spark
knock. If this occurs, use a gasoline
rated at 87 octane or higher as soon
as possible. If you are using gasoline
rated at 87 octane or higher and you
hear heavy knocking, the engine
needs service.
If the vehicle has the 6.2L V8 engine
(VIN Code W) or the 6.2L V8 engine
(VIN Code J), use premium unleaded
gasoline with a posted octane
rating of 91 or higher. For best
performance, use premium unleaded
gasoline with a posted octane
rating of 93. You can also use
regular unleaded gasoline rated at
87 octane or higher, but the vehicle’s
acceleration could be slightly
reduced, and you might notice a
slight audible knocking noise,
commonly referred to as a spark
knock. If the octane is less than 87,
you might notice a heavy knocking
noise when you drive. If this occurs,
use a gasoline rated at 87 octane
or higher as soon as possible.
Otherwise, you could damage the
engine. If you are using gasoline
rated at 87 octane or higher and you
hear heavy knocking, the engine
needs service.

Gasoline Specifications

At a minimum, gasoline
should meet ASTM specification
D 4814 in the United States or
CAN/CGSB-3.5 or 3.511 in Canada.
Some gasolines contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). We recommend
against the use of gasolines
containing MMT. See

Fuel
Additives on page 8-45 for

additional information.

10-23-2010, 05:18 PM	#17
TonyNo Drives: 2016 2SS, SW Join Date: Oct 2009 Location: Chicago Suburbs Posts: 1,079	Heh. My car does run better with premium... One Example: On an uphill grade, under light acceleration, low-octane fuel causes surging. Premium eliminates that. The bad thing is that it did nothing for my quarter time. __________________

10-23-2010, 06:52 PM	#21
scrming Red Brick of Vengeance! Drives: 12 Second Brick Join Date: Jun 2009 Location: at my pulpit Posts: 7,745	This subject has been beaten to death... The ECU in the LLT is "over-sparked" and relies on the knock sensors to pull the timing back. This is very obvious in my data logs. With 87 octane the knock sensors are VERY ACTIVE! Check the video and watch the bottom right corner which is "Spark Retard" from the knock sensors: When I run 93 octane the knock sensor are almost totally inactive! Spark Retard is almost constantly 0! So with 93 octane I'm running more timing which mean more power... And in fact we had one guy here with a shop that actually tested this on his dyno and showed that higher octane did make more power... The ECU basically adapts to the higher octane by constantly trying to add more timing until the knock sensors kick in... at this point either you believe it or you don't... I've seen the data logs... __________________ 2011 Ford Flex EcoBoost Limited - 12.727 @ 109.790 MPH

10-23-2010, 07:03 PM	#22
MillerTime Blowin the doors off! Drives: A 2013 SS RS 6M SR Join Date: Apr 2010 Location: Phoenix, AZ Posts: 2,390	Faster no. Smoother yes. your engine will perform better with higher octane every time. performance encompasses more than just HP... __________________ 2G1FS1EWXD9163847

10-23-2010, 07:07 PM	#25
Lucky SOB Drives: 2010 Camaro 2SS/RS Join Date: May 2009 Location: Michigan Posts: 756	You're all wasting your money... GM engineers did not design your car for 91,93 etc... __________________

10-23-2010, 07:20 PM	#27
devildoc Drives: '12 Toyota Tacoma Dbl Join Date: Sep 2009 Location: Beaufort, SC Posts: 1,275 View My Garage	I run 93 in the car a majority of the time, and as Scrming has stated, along with several others higher octane and this car are made for each other! I, myself, know this almost better than most people. With my mods my spk rtd was so high along with my timing. I was losing almost 30hp with 87oct. Gained it back with the 93 + timing adjustments. People can believe what they want, it's your personal vehicle do to it as you wish. Tell me how I go from a 14.5sec 1/4mi w/ 87 to a 14.04 w/ 93? The 14.5 was an even better DA than the 93! __________________ MRT V2\|Trifecta Tune\|Airaid\|ARH LTs\|Eibach Sways STANDING 1/4MI: 13.948@99.87 6600RPM HP/TQ Gains - 30.54HP/24.3TQ (NOT PEAK)

10-23-2010, 05:02 PM	#15
Murph0408 Drives: 2LT Black '10 Camaro, 2000 Durango Join Date: Aug 2010 Location: CT Posts: 373 View My Garage	lol you guys are funny 87 octane. that is what the engine takes. you're just wasting your money otherwise. i was skeptical but even the guys at chevy confirmed it. "oh i swear it feels faster" please. it's all mental. it's like when people drink a buncha beers and start acting all drunk, until somebody informs them it was non-alcoholic.

10-23-2010, 06:24 PM	#19
rydahog Drives: camaro ss Join Date: Jul 2010 Location: usa Posts: 2,166 View My Garage	If you use 89 oct...and 1/2 92 octane...it will equal out to approx 1/2 lets say 90..for agruments sake...so you can mix and match.

10-23-2010, 06:42 PM	#20
zen Drives: 2011 CTS CPE & 2010 2LT/RS CGM Join Date: Jun 2009 Location: Nevada Posts: 337	If you use a single nozzle dispenser the middle grade is mixed in the dispenser. 50% high octane and 50% low octane. So mixing it in your tank is immaterial.

10-23-2010, 07:05 PM	#23
Dreamer2005 Drives: Z Join Date: Oct 2010 Location: Timbuktu Posts: 14	and it will be beaten to death some more. Just the nature of forums....one side believes one thing, the other side believes another, the middle side gets a dashhawk. I had one of those things on my EVO when I still had it....trapped at 12.66 but the hawk said 11.33 or something like that. Bunch of my Honda lovin friends loved it though. Saved them thousands on expensive mods they didnt need. The hawk drops your time in an instant. But it is good for monitoring stuff.

10-23-2010, 07:07 PM	#24
VR Baron SoCal Camaro5 Race Team Drives: 2021 Shadow Grey Camaro 2SS 1LE Join Date: Mar 2010 Location: SO CAL Posts: 14,367	Don't know about making car faster but I used 91 awhile back when I had the Airaid V1 which leaned the car and is said to pull timing from the leaning out, and basically ran worse then stock. The 91 gave it more throttle response and smoother, guess helped restore some of the lost timing from the Airaid. Now with the car broken in and the mods I have I have switched back and forth to see if noticable and really can't tell, maybe just a bit smoother. The biggest change came when I changed brands of 91,I was using Shell near my house but switched to a Chevron further away and that was noticable! I guess that particular Shell just had worse quality gas is all, and cost more too! Next time I will try the 87 from Chevron to see if any different and will report in. one thing I have noticed as well is that I have less soot in the tail pipes from the Chevron which is good. Performance wise the car runs great. Today with the second tank of Chevron in we went to the beach for our walk and there is a section of PCH we make a u turn on to get to where we park. The road is a 60 zone, so as I make the turn, slow to a stop and in sport mode stand on it through 73 before letting off the gas, only place I can even do that. What I noticed for the first time is 1-2 shift was a bit firmer and 2-3 shift was nice and firm, more then usual as if there was a shift kit in! felt great! Car hits about 63 then shifts to 3rd and 73 comes up really fast. I don't know if it was the gas or cooler, damp air or both but the car seems to like it. Will see if it continues after the 87 goes in. FYI there are dyno runs from a shop in VA who tested the 87 vs 93 in hot weather I think in Aug, and the car made more low to mid range power and some on top to on the 2nd, cooler run. Might check it out for whait it's worth.

10-23-2010, 07:43 PM	#28
Stett Drives: 11 IBM 1LTRS, '89 Firebird Formula Join Date: May 2010 Location: Orlando, FL Posts: 177	Starting Page 8-43 in the owners manual: Fuel Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com. Driving and Operating 8-43 The 8th digit of the Vehicle Identification Number (VIN) shows the code letter or number that identifies the vehicle’s engine. The VIN is at the top left of the instrument panel. See Vehicle Identification Number (VIN) on page 11-1. Recommended Fuel If the vehicle has the 3.6L V6 engine (VIN Code V), use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, you might notice an audible knocking noise when you drive, commonly referred to as spark knock. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, the engine needs service. If the vehicle has the 6.2L V8 engine (VIN Code W) or the 6.2L V8 engine (VIN Code J), use premium unleaded gasoline with a posted octane rating of 91 or higher. For best performance, use premium unleaded gasoline with a posted octane rating of 93. You can also use regular unleaded gasoline rated at 87 octane or higher, but the vehicle’s acceleration could be slightly reduced, and you might notice a slight audible knocking noise, commonly referred to as a spark knock. If the octane is less than 87, you might notice a heavy knocking noise when you drive. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you could damage the engine. If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, the engine needs service. Gasoline Specifications At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB-3.5 or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives on page 8-45 for additional information. __________________ 1100 - 7/19 - Preliminary order accepted 2000 - 7/21 - Order accepted by GM 2500 - 7/28 - Order preferenced 3000 - 7/28 - Order accepted by production control 3400 - 8/09 - Order broadcast 3800 - 8/17 - Order produced 9/02 - DELIVERED!

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