93 Octane in Denver?

[millertime]

My dad is thinking of bringing his Corvette out here and my buddy wants to bring his turbo thunderbird out and they're both looking for 93 octane. I've heard of the Amoco on 32nd and Wads having 100 and the Shell on Chambers and Hampden having 92, anybody know where else to get good gas? I never really pay attention since I'm on corn fuel in the rx7.

This link is dead.
http://www.cosportbikeclub.org/local/highoctane.html

And this guy said most of the stations listed are closed anyways.
http://www.m3forum.net/m3forum/showthread.php?t=448378

Here's a copy/paste from that link from another forum:
Larry's Amoco - (Weatridge) 3201 Wadsworth (303)-238-6941
100 octane
110 octane (sold out back but not after 6pm)

The Kwik Korner - (437 N US Hwy 287, Berthoud) (970)-532-4967
93 octane

TBG Service Station - (1042 Denver Avenue Ft. Lupton, CO 80621) (303)857-0379
Open until 5 on Saturday, closed sundays.
100 Octane

Ha iston Oilco - (225 Maple St,Fort Collins,CO 80521 ) Phone: (970) 482-8053
100 octane (low lead), 112 octane (leaded)

Schrader's Country Store "aka Schrader Oil CO Car Washes" - (320 N College Ave,Fort Collins,CO 80524) Phone: (970) 482-5211
112 octane (leaded): late spring and summer only

Duggans Petroleum - (4601 S Santa Fe Dr - Sheridan, CO) (303)781-0546 Sante Fe & Union, then north 1 block on the frontage rd.
101, 104, 110, 114, 118 octane

Petro Stop - (4301 S Parker Rd Aurora, CO) (303)690-7833
S.W. corner of Parker Rd. and Quincy
93.5 octane

Farmcrest - Centennial & 30th (COSP)
93 octane

Brooks Racing Engines - (629 S. 29th Street Colorado Springs, CO) (719)632-5496
- Performance unleaded with pump octane of 100
- CSP, an oxygenated fuel, motor octane 96.6, pump octane of 102.3
- Motorsport 103, pump octane 103, motor octane 99
- C10, pump octane 100, motor octane 96

Green Mountain Shell - (12410 W. Alameda Parkway, Denver, CO) (303) 989-7820
In front of the Green Mountain Movie theaters next to the Mcdonalds
110 Octane (leaded) and E-85

Bandimere Speedway (Morrison)
100, 104, 116 octane (available on race days only)

AAI Speed Shop 58th and Lamar in Arvada - 1 block north of 58th Ave.
100, 110, 118 octane

Joes (just west of Longmont). Its at Hygiene road where the stop sign is by the fire dept. 93 octane.

Duggan's- Englewood
4435 S Santa Fe Dr
Englewood, CO 80110
100, 105 octane.


Anybody got more input

[Dwduc]

You probably already know this but in case anyone on here is curious the numbers on the pumps here are the AKI (anti knock index) which is an average of the fuel's RON (research octane number) and its MON (motor octane number) 91 AKI out of the pump is about 95 octane RON, so good news for them if he wants 93 octane. However if he needs 93 AKI that might be harder to locate.

Useless things I remember from aircraft mechanic school.

[millertime]

You probably already know this but in case anyone on here its curious the numbers on the pumps here are the AKI (anti knock index) which is an average of the fuel's RON (research octane number) and its MON (motor octane number) 91 AKI out of the pump is about 95 octane RON, so good news for them if he wants 93 octane. However if he needs 93 AKI that might be harder to locate.

Useless things I remember from aircraft mechanic school.

They both want whatever is labeled as 93 in the flatlands to the east.

[erod550]

At altitude 91 will get the job done. Less octane is needed because of the lower oxygen content in the atmosphere. Or if they're really uncomfortable with running 91 with a specialized tune or something they can just get some octane booster to use with 91.

[Learjet45]

What erod said. The lower air pressure is why you need lower octane fuels for the same results of higher octanes at sea level. The engine doesn't develop pressures as high since there's less air/oxygen in the cylinder, so you need a lower octane since the fuel is inherently less likely to detonate before sparking happens. If they come out and really experience issues, they can get tuned for the lower octane and not have any issues.