What type of gas does the GXP take?? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-23-2004, 09:29 AM   #1
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Jul 2003
Location: Upstate New York
Posts: 167
Thanks: 0
Thanked 0 Times in 0 Posts
GTP2SSEi is on a distinguished road
Default What type of gas does the GXP take??

I'm pretty sure that the newest Caddy Northstars run on recommended 87 octane,...is that the same gas that the new GXP'* are recommended to run??
GTP2SSEi is offline   Reply With Quote
Old 06-23-2004, 12:09 PM   #2
Senior Member
Expert Gearhead
 
Join Date: Dec 2002
Location: Mississauga, Ontario
Posts: 20,892
Thanks: 0
Thanked 1 Time in 1 Post
Jim W is on a distinguished road
Default

High compression = high octane...at least in my car it need 90+, however the newer Northstars are allowed mid grade fuel...

Same would go for the GXP I suppose
Jim W is offline   Reply With Quote
Old 06-23-2004, 02:31 PM   #3
Senior Member
Posts like a Northstar
 
Join Date: Nov 2003
Posts: 560
Thanks: 0
Thanked 0 Times in 0 Posts
mikey is on a distinguished road
Default

compression was dropped from 10.3 to 10, and the combustion chamber was redeisned so its made to run off 87, id still use 89/90 since a few places charge the same for 90 as 87 (there'* a place in mn if anyone wants to know about it off cedar)
mikey is offline   Reply With Quote
Old 06-23-2004, 03:40 PM   #4
Senior Member
True Car Nut
 
Join Date: Jul 2003
Location: Toronto, Ontario, Canada
Posts: 5,158
Thanks: 0
Thanked 0 Times in 0 Posts
repinS is on a distinguished road
Default

Buyer'* guide from Canadian autoshow says regular for the STS, premium for the GXP
repinS is offline   Reply With Quote
Old 06-23-2004, 05:17 PM   #5
Senior Member
True Car Nut
 
Join Date: Jan 2003
Location: Bonney Lake/Ellensburg, Washington- WCBF '04, '05, '06, '07 Survivor-
Posts: 7,098
Thanks: 0
Thanked 0 Times in 0 Posts
driverjohn2005 is on a distinguished road
Default

GM says that the GXP can run of 87 octane rating.
driverjohn2005 is offline   Reply With Quote
Old 06-23-2004, 11:08 PM   #6
Senior Member
True Car Nut
 
Join Date: Jun 2003
Location: Purgatory
Posts: 6,313
Thanks: 0
Thanked 0 Times in 0 Posts
PontiacDad is on a distinguished road
Default

Copied from the 2004 Bonneville owners manual.
Quote:
Gasoline Octane
If your vehicle has the 3.8L V6 engine, use regular unleaded gasoline with a posted octane of 87 or higher. If the octane is less than 87, you may get 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 might damage your engine. A little pinging noise when you accelerate or drive uphill is considered normal. This does not indicate a problem exists or that a higher-octane fuel is necessary. If you are using 87 octane or higher-octane fuel and hear heavy knocking, your engine needs service.

If your vehicle has the 4.6L V8 engine, use regular unleaded gasoline with a posted octane of 87 or higher. However, for best performance, you may wish to use middle grade or premium unleaded gasoline. If the octane is less than 87, you may get 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 might damage your engine.
PontiacDad is offline   Reply With Quote
Old 06-24-2004, 02:05 AM   #7
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,134
Thanks: 0
Thanked 0 Times in 0 Posts
SSEimatt93 is on a distinguished road
Default

If i could afford a GXP, i could afford 91+
Which is the only grade I would run. IMO
SSEimatt93 is offline   Reply With Quote
Old 06-26-2004, 11:54 PM   #8
Senior Member
True Car Nut
 
Join Date: May 2003
Posts: 7,262
Thanks: 0
Thanked 0 Times in 0 Posts
ssesc93 is on a distinguished road
Default

rocket fuel
ssesc93 is offline   Reply With Quote
Old 06-27-2004, 12:08 AM   #9
Senior Member
Posts like a Turbo
 
Join Date: Jun 2003
Location: Severna Park, Maryland US
Posts: 240
Thanks: 0
Thanked 0 Times in 0 Posts
Muslimsteel is on a distinguished road
Default

theres this one sunoco gas station near my school that actually offers "Race Fuel" (yes thats what it says on the pump) 95 octane rating it was like 3.79$ a gallon last time i checked in like May hehe thats some rocket fuel!
Muslimsteel is offline   Reply With Quote
Old 06-27-2004, 12:10 PM   #10
Senior Member
Posts like a Northstar
 
Join Date: Nov 2003
Posts: 560
Thanks: 0
Thanked 0 Times in 0 Posts
mikey is on a distinguished road
Default

our race fuel is 110 octane, last year it was about $3.50-4.00, not sure what its at now, probably more

running too high of octane can be just as bad as too low of octane. if a car is designed for 87, and you always put 93 in, it may have a problem actually igniting that gas, running 93 in a gxp isn't a problem because it still has a high compression, but im sure anything past 90 (midgrade) is overkill
mikey is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Does 7th Gen Impalas Get Shitty Gas Mileage?, Mine Does, Its Annoying! - 05 9C1 GM-Ryder Chevrolet 17 08-09-2016 06:05 PM
Engine makes a metal type ping ??? only does it sometimes cvc 1992-1999 7 11-01-2006 06:58 PM
What type of compressor does the 93 use? ssesc93 General GM Chat 3 12-09-2004 07:40 PM
Does anybody on here have this type of dashboard? ssesc93 General GM Chat 21 09-16-2003 02:09 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:52 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.