Octane ratings in Colorado are LOW

thundergod · 02-04-2004, 07:22 AM

Has anyone ever noticed that in Colorado we have some of the lowest octane ratings in the nation.

Our Premium is 91, Just below us in New Mexico - its 95-98.

Our lowest is 85, NM is 87. (for the same price)

Most "new" cars require 87+, of course we have to run 91.

But I have noticed a bit of knocking occuring in my engine lately...still wondering why it occuring with 91...time for a tune..maybe it was bad gas.

GreekDeno · 02-04-2004, 07:44 AM

HPH · 02-04-2004, 07:46 AM

...and is universal.

Here in Northern New Mexico, premium is either 91 (most of Santa Fe) or, in higher towns, 90, just like in Colorado. Pre-ignition isn't such a problem as you go higher. HPH

scuderia · 02-04-2004, 07:46 AM

GreekDeno · 02-04-2004, 07:49 AM

Reggie · 02-04-2004, 07:52 AM

I have heard just the opposite being proposed by people - I will see if I can find that link

Chevron

Reggie · 02-04-2004, 07:53 AM

Info

WantAvant · 02-04-2004, 09:09 AM

I can believe knocking if you're running a lot of boost. But 91 octane makes my stock 2.7t miss.

scuderia · 02-04-2004, 10:48 AM

brian@avalonmotorsports · 02-04-2004, 12:54 PM

02-04-2004, 07:44 AM	#2
GreekDeno AudiWorld Expert Garage is empty, add now Join Date: May 2000 Posts: 26,092	Parker/Quincy has 93.5 for usually cheaper than reg. Low oct b/c of altitude.

02-04-2004, 07:46 AM	#3
HPH AudiWorld Super User Garage is empty, add now Join Date: Aug 2001 Posts: 2,809	This is an elevation adjustment... ...and is universal. Here in Northern New Mexico, premium is either 91 (most of Santa Fe) or, in higher towns, 90, just like in Colorado. Pre-ignition isn't such a problem as you go higher. HPH __________________ __________________________________ Howard Hanson, BocaRaton/EstesPark Sadly, the allroad is gone, and I still miss it.

02-04-2004, 07:46 AM	#4
scuderia Senior Member Garage is empty, add now Join Date: Aug 2003 Posts: 9,918	Low oct b/c of altitude. => why? __________________ Now: 2006 A4 2.0T \|\| Before: 2003 A4 1.8T (RIP)

02-04-2004, 07:49 AM	#5
GreekDeno AudiWorld Expert Garage is empty, add now Join Date: May 2000 Posts: 26,092	I'm no expert, but I think it has to do w/ the lower amounts of oxygen in the atmosphere up here.

02-04-2004, 07:52 AM	#6
Reggie AudiWorld Expert 2011 Audi Q5 My Garage Join Date: Mar 2000 Location: Fort Collins Colorado Posts: 30,620	Info I have heard just the opposite being proposed by people - I will see if I can find that link Chevron __________________

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02-04-2004, 07:53 AM	#7
Reggie AudiWorld Expert 2011 Audi Q5 My Garage Join Date: Mar 2000 Location: Fort Collins Colorado Posts: 30,620	The opposite view Info __________________

02-04-2004, 09:09 AM	#8
WantAvant New Member Garage is empty, add now Join Date: Oct 2002 Posts: 41	Are you sure it's knocking and not missing? I can believe knocking if you're running a lot of boost. But 91 octane makes my stock 2.7t miss.

02-04-2004, 10:48 AM	#9
scuderia Senior Member Garage is empty, add now Join Date: Aug 2003 Posts: 9,918	Great links. thx __________________ Now: 2006 A4 2.0T \|\| Before: 2003 A4 1.8T (RIP)

02-04-2004, 12:54 PM	#10
brian@avalonmotorsports Audiworld Basic Sponsor Garage is empty, add now Join Date: Jul 2000 Posts: 10,496	my regular hangout. __________________ ---------------------------------------------------------- Brian Sump Owner Audi Performance Avalon Motorsports Audi Repair Denver Avalon Motorsports Avalon Motorsports 800 E. 73rd Ave #13 Denver, CO 80229 303-400-3001 voice 303-287-6004 fax info@avalonmotorsports.com

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