Gasoline with 10% ethanol now 87 Octane? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Cymaro · 10-09-2013, 04:43 PM

Hello,Has anyone else noticed that super unleaded gas with 10% ethanol is now 87 octane? That is the same octane as regular gas. I'm in IA and the 10% ethanol gas used to be 89. Anyone know of a reason for this?

*The_Blur* · 10-09-2013, 05:12 PM

It's been like this for years. Most stations have up to 10% ethanol on all gas. I have yet to see in person a station that isn't 10% ethanol at any octane.

toNspahreP · 10-09-2013, 05:36 PM

Super unleaded octane varies by locality. It's 92 or 93 here in south GA, and 94 at certain stations. Up in high elevation, its usually 87 or 89.

ewynn9 · 10-09-2013, 07:47 PM

Quote:

Originally Posted by The_Blur

It's been like this for years. Most stations have up to 10% ethanol on all gas. I have yet to see in person a station that isn't 10% ethanol at any octane.

I found many stations in Denver that don't have ethanol. Love taking road trips up there. The car feels so much better.

crysalis_01 · 10-09-2013, 10:33 PM

Stations in my neck of the woods (~5000ft ASL) have 10% ethanol in regular and super, but premium is ethanol free. But a couple stations have ethanol free reg and super...at a higher cost.

*DGthe3* · 10-09-2013, 11:00 PM

Quote:

Originally Posted by Cymaro

Hello,Has anyone else noticed that super unleaded gas with 10% ethanol is now 87 octane? That is the same octane as regular gas. I'm in IA and the 10% ethanol gas used to be 89. Anyone know of a reason for this?

That sounds very low for super unleaded. The altitude of Ames Iowa is only about 1000 ft, so the air isn't going to be too much thinner than at sea level. The only other thing I can think of is that they aren't taking the ethanol into account when giving the octane rating (pure ethanol has an octane rating of 99). Even then, that wouldn't get it close to the octane that is normal for 'super' gasoline.

crysalis_01 · 10-10-2013, 12:11 AM

That does seem awfully low for that area. Even at my altitude the grades are 85.5, 87, 89, and 91.

Cymaro · 10-11-2013, 02:41 PM

I actually found the answer to my own question while browsing my local news station website.http://www.kcci.com/news/central-iow...index.htmlThat kind of sucks because I like using the 89 octane as it was cheaper than the 87 and a higher octane.

strych9 · 10-11-2013, 03:36 PM

Here: regular = 87 (pure), super = 89 (E10), premium = 91 (pure), super premium = 93 (E10).

Interestingly enough, 89 super used to be cheaper than 87 regular. They have recently reversed that price structure. Funny enough, it's never been announced. I have no doubt in my mind that people are still pumping super thinking that they're getting the cheapest gas.

Stew · 10-11-2013, 04:14 PM

Quote:

Originally Posted by strych9

Here: regular = 87 (pure), super = 89 (E10), premium = 91 (pure), super premium = 93 (E10).

Interestingly enough, 89 super used to be cheaper than 87 regular. They have recently reversed that price structure. Funny enough, it's never been announced. I have no doubt in my mind that people are still pumping super thinking that they're getting the cheapest gas.

Here we have 87, 89, and 91 or 93 depending on the station. used to be $.10 step from one grade to another, now it is $.20.

ChrisBlair · 10-12-2013, 06:31 AM

Ethanol mix is such a lie and a scam.

10-09-2013, 04:43 PM	#1
Cymaro Drives: 2010 Camaro LT2/RS Join Date: Apr 2011 Location: Ames, IA Posts: 248	Gasoline with 10% ethanol now 87 Octane? Hello,Has anyone else noticed that super unleaded gas with 10% ethanol is now 87 octane? That is the same octane as regular gas. I'm in IA and the 10% ethanol gas used to be 89. Anyone know of a reason for this?

10-09-2013, 05:12 PM	#2
The_Blur Moderator Drives: 2018 Harley-Davidson Street Bob Join Date: Nov 2007 Location: San Diego Posts: 14,769	It's been like this for years. Most stations have up to 10% ethanol on all gas. I have yet to see in person a station that isn't 10% ethanol at any octane. __________________ RDP Motorsport//GEN5DIY//Cultrag Performance//JPSS//Rodgets Chevrolet// Operation Demon//Buy at Invoice//RACECARWEAR RESPECT ALL CARS. LOVE YOUR OWN. warn 145:159 ban

10-09-2013, 10:33 PM	#5
crysalis_01 Iron fist, lead foot Drives: 2003 Mustang Cobra Join Date: Jul 2013 Location: Wyoming Posts: 1,228	Stations in my neck of the woods (~5000ft ASL) have 10% ethanol in regular and super, but premium is ethanol free. But a couple stations have ethanol free reg and super...at a higher cost. __________________ '03 SVT Cobra-SC4.6L V8 \|\| modded with mods'n'stuff

10-10-2013, 12:11 AM	#7
crysalis_01 Iron fist, lead foot Drives: 2003 Mustang Cobra Join Date: Jul 2013 Location: Wyoming Posts: 1,228	That does seem awfully low for that area. Even at my altitude the grades are 85.5, 87, 89, and 91. __________________ '03 SVT Cobra-SC4.6L V8 \|\| modded with mods'n'stuff

10-11-2013, 03:36 PM	#9
strych9 I'll be back... Drives: Subaru, HD Road Glide Special Join Date: Apr 2012 Location: Omaha, NE Posts: 3,036 View My Garage	Here: regular = 87 (pure), super = 89 (E10), premium = 91 (pure), super premium = 93 (E10). Interestingly enough, 89 super used to be cheaper than 87 regular. They have recently reversed that price structure. Funny enough, it's never been announced. I have no doubt in my mind that people are still pumping super thinking that they're getting the cheapest gas. __________________ Bye bye, Bumblebee! --------------------------------------------------------------------------------------- Build Journal My Garage GoPro Mic Hack

10-09-2013, 05:36 PM	#3
toNspahreP Account Suspended Drives: SS Join Date: Aug 2013 Location: jawja Posts: 128	Super unleaded octane varies by locality. It's 92 or 93 here in south GA, and 94 at certain stations. Up in high elevation, its usually 87 or 89.

10-11-2013, 02:41 PM	#8
Cymaro Drives: 2010 Camaro LT2/RS Join Date: Apr 2011 Location: Ames, IA Posts: 248	I actually found the answer to my own question while browsing my local news station website.http://www.kcci.com/news/central-iow...index.htmlThat kind of sucks because I like using the 89 octane as it was cheaper than the 87 and a higher octane.

10-12-2013, 06:31 AM	#11
ChrisBlair Buick 455 Fan Drives: 1970 Buick, 2012 1SS LS3 Join Date: Jun 2010 Location: Boston MA Posts: 5,957	Ethanol mix is such a lie and a scam. __________________