Jump to content


Toggle shoutbox Shoutbox Open the Shoutbox in a popup

@  BlackBetty : (24 October 2014 - 02:26 AM) what did you do to the air box?
@  Froman003 : (23 October 2014 - 11:32 PM) Brake uprgrade and air box gut finished!! what a difference!!
@  BlackBetty : (23 October 2014 - 07:55 PM) if my climate control displays 50F at all times does that mean its bad and i need a new one? Ive gone thru 3 ambient temp sensors and no luck fixing it
@  BlackBetty : (21 October 2014 - 10:06 PM) lol at the milkshake song
@  kdubb : (21 October 2014 - 06:28 PM) Nvm. I don't need a pulley puller lol
@  kdubb : (21 October 2014 - 05:32 PM) Do i need a pulley puller for the p/s pump, if i need to move it out of the way, to replace the water pump?..98 gs
@  Frank : (21 October 2014 - 03:12 PM) lol
@  marcleach75 : (21 October 2014 - 01:11 PM) Thanks, I needed that.
@  buck531 : (21 October 2014 - 12:47 PM) milkshake brings all the LIM's to the yard.
@  99RegalClone : (21 October 2014 - 04:48 AM) hey guys
@  marcleach75 : (21 October 2014 - 01:37 AM) Just pulled my oil cap, Milkshake. I am lost for words.
@  Marchi1 : (18 October 2014 - 08:55 PM) Just use a piece of vac libe
@  Marchi1 : (17 October 2014 - 11:57 PM) Yeah we are
@  Wawful : (17 October 2014 - 04:49 AM) holy cow same guys are still here
@  keithr182 : (16 October 2014 - 03:40 PM) Perfect. That's the cheaper solution I was looking for! Thanks
@  BlackBetty : (16 October 2014 - 07:03 AM) entire kit of supplies at your local shop is like $12 for all the lines a nd Tee's vs a gm kit of $35+
@  BlackBetty : (16 October 2014 - 06:54 AM) to be honest i used the larger tube out of the two sizes given in the vacuum how to thread.
@  keithr182 : (16 October 2014 - 06:48 AM) Anyone know the part number of the vac hose in this picture (the one with the white stripe - goes to the SC actuator) ? It seems like it's a formed hose, and I can't find the PN anywhere... Or could I just use a vacuum line from the store? Pic here: http://www.regalgs.o...-1304997385.jpg
@  RegalTraveler : (15 October 2014 - 01:53 AM) anyone on tonighgt?
@  Marchi1 : (13 October 2014 - 03:13 PM) Fixed it...the om bots are gone

Photo
- - - - -

91 octane vs 94 octane (10% ethanol)


  • Please log in to reply
13 replies to this topic

#1 Margarito

Margarito

    Been There. Done That.

  • Members
  • PipPipPipPipPip
  • 929 posts

Posted 13 March 2010 - 09:09 AM

Guys, what octane does the Series II 3800 engine like more?

I notice my car has much better fuel consumption with the 91 octane Shell V-Power which is pure gasoline and whatnot, car seems to run a little smoother maybe.

However, it seems to me, I have more explosive power with the 94 octane with 10% ethanol added, I am not 100% sure though.

I have a few questions.

Ethanol... what's the deal with ethanol, it's not 'good' for the engine is it? I know it has a high octane rating but other than that, is it possibly harmful?

I remember reading on GP forum of a guy who said he will never put any gas mixed with ethanol like Sunoco or Petro Canada do with their 94 octane, and he would rather run 91 octane with no ethanol.

Any ideas guys?

I'm still not sure what gas to use longterm... Shell V power 91 or Petro Canada 94.

Would going WOT on the highway with each gas, and seeing how many lbs of boost I get, be a good indicator of what gas is better? Making sure, that of course temperature is abou the same on both test days, or is that pointless?

Let's hear everyones thoughts on using 91 vs 94 with ethanol :)
  • 0

#2 rubberhead

rubberhead

    Contributing Member

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 2,084 posts
  • LocationOshawa
  • First Name:
    Jim

Posted 13 March 2010 - 10:19 AM

tried both, tracked the fuel mileage, similar driving conditions and found that my car likes the 91. KR didn't change much, a tad lower maybe with the 91. and its a couple pennies a litre cheaper.

/my $0.02
  • 0

#3 Geojb

Geojb

    RGS.org VIP Server Upgrade supporter

  • Members
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 4,599 posts
  • LocationAngola, NY
  • First Name:
    George

Posted 13 March 2010 - 01:50 PM

Would going WOT on the highway with each gas, and seeing how many lbs of boost I get, be a good indicator of what gas is better? Making sure, that of course temperature is abou the same on both test days, or is that pointless?

I would say pointless.
Too many variables with going WOT & temps & such to use boost as an inticator.
Calculations real ones, not DIC. would be the best for over all MPG.
For performance Track times or something that could measure 0-60 MPH times.
I thought I read somewhere tht ethonal changes the fuel ratio or we need to change "that 14.7 to 1" ratio with a tuner for best performance/KR/MPG.
Just my 0.02
  • 0

#4 djlamp14

djlamp14

    Official RegalGS.org Flagship Car Owner

  • Members
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 3,203 posts
  • LocationGrand Meadow, MN
  • First Name:
    Robert

Posted 13 March 2010 - 07:38 PM

Ethanol is basically alcohol (rated at around 105-110 octane). It will get you more power but less gas mileage. So a little less KR (burns cooler I believe :think:) You will lose some number of MPG. Here in Minnesota a lot of the high HP guys tune and run for the E-85. They are able to run a little more stable with pulleys around 2.8 and 2.6 size. I have rode in a 11 second GP running E-85 and it will blow your balls off! >-) It also smells like Race gas
  • 0

#5 Geojb

Geojb

    RGS.org VIP Server Upgrade supporter

  • Members
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 4,599 posts
  • LocationAngola, NY
  • First Name:
    George

Posted 13 March 2010 - 10:35 PM

Aggggg, Ala Homer...... :drool:

It also smells like Race gas


  • 0

#6 djlamp14

djlamp14

    Official RegalGS.org Flagship Car Owner

  • Members
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 3,203 posts
  • LocationGrand Meadow, MN
  • First Name:
    Robert

Posted 13 March 2010 - 10:58 PM

Aggggg, Ala Homer...... :drool:

It also smells like Race gas



...Just another positive. IMO at least.
  • 0

#7 uman44

uman44

    Contributing Member

  • Members
  • PipPipPip
  • 328 posts
  • LocationPearland, TX (South Houston)
  • First Name:
    Jake

Posted 13 March 2010 - 11:05 PM

Ethanol is basically alcohol (rated at around 105-110 octane). It will get you more power but less gas mileage. So a little less KR (burns cooler I believe :think:) You will lose some number of MPG. Here in Minnesota a lot of the high HP guys tune and run for the E-85. They are able to run a little more stable with pulleys around 2.8 and 2.6 size. I have rode in a 11 second GP running E-85 and it will blow your balls off! >-) It also smells like Race gas



ABStiffGS's Regal was in the 11's on E85 and it smelled like corn...

Ethanol burns cooler (reducing KR), but releases fewer BTU's meaning less power per unit compared to gasoline (lower MPG). Gasoline companies add Ethanol inorder to use lower octane gasoline with Ethanol pumping up the octane.

As far as the OP's question... I always choose non-ethanol, even with the higher octane 10% stuff. However, I don't think either of us are pushing enough HP or fine tuning enough to make a difference.
  • 0

#8 MikeGS

MikeGS

    RGS.org VIP Server Upgrade supporter

  • Forum Moderator
  • 1,912 posts
  • LocationJust south of the Mason Dixon Line
  • First Name:
    Mike

Posted 13 March 2010 - 11:09 PM

I liked the good old days when you could get 93 or 94 octane where there was no ethanol in it... The best of both worlds.

#9 Freddotron

Freddotron

    Contributing Member

  • Members
  • PipPipPipPipPip
  • 982 posts
  • LocationMinden, Ontario
  • First Name:
    Fred

Posted 14 March 2010 - 06:38 AM

To the OP if you live in ontario imo the sunoco 94 is crap. Shell 91 Is the only thing I'll put in my tank. No exceptions. I can't speak for your 94 octane gas if your from the states. all i know is that in ontario the best gas you can get is shell 91
  • 0

#10 Margarito

Margarito

    Been There. Done That.

  • Members
  • PipPipPipPipPip
  • 929 posts

Posted 14 March 2010 - 01:34 PM

To the OP if you live in ontario imo the sunoco 94 is crap. Shell 91 Is the only thing I'll put in my tank. No exceptions. I can't speak for your 94 octane gas if your from the states. all i know is that in ontario the best gas you can get is shell 91


Im in Montreal.

I think Sunoco 94 is pretty much the same as Petro Canada 94.

Yeah Ill keep 91 V-power, thanks guys :_)
  • 0

#11 chromeGS

chromeGS

    CHROMEGS FOREVER!!!!!

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 1,606 posts
  • LocationFORT WAYNE INDIANA
  • First Name:
    ROB

Posted 14 March 2010 - 02:44 PM

my shell only has 93 with no ethinal* in it, well that is what the clerk said
  • 0

#12 MikeGS

MikeGS

    RGS.org VIP Server Upgrade supporter

  • Forum Moderator
  • 1,912 posts
  • LocationJust south of the Mason Dixon Line
  • First Name:
    Mike

Posted 14 March 2010 - 08:07 PM

my shell only has 93 with no ethinal* in it, well that is what the clerk said

Never mind the clerk, look for the sticker on the pump. By law there should be on there.

#13 Crazyguy03

Crazyguy03

    Official RegalGS.org Flagship Car Owner

  • Members
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 7,318 posts
  • LocationWNY

Posted 14 March 2010 - 10:42 PM

Gas pumps are supposed to place the ethanol percentage somewhere where you can see it. In NY almost alll the stations say may contain up to 10% ethanol

Now my problem with that is, since we used to have Mobile being the only one NOT using ethenal, it was more expensive. Sunnoco was cheaper , offered 93 octane and had up to 10% ethanol.

Now both Mobile and Sunnoco are no longer 100% gas. As well as BP, Noco, Getty and tops etc... so anyone looking for pure gas in WNY is kinda out of luck.
  • 0

#14 Loly

Loly

    SHUTURPIEHOLE

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 1,938 posts
  • LocationKitchener, Ontario, CANADA
  • First Name:
    Gy

Posted 14 March 2010 - 10:55 PM

It's pretty much the same up here in Ontario...it's called "Industry Standard" and again, it's pretty much a continental thing.
  • 0




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

BoHeGeHa Dark Blue 2.1.1 © Thomas Yugar (Chemical Chaos)
Official upgrade for IPB 2.3.x © Michael ( Dev Fuse )
3.X © Upgrade by Dumbledore ( Tppskinning )