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Author Topic: Unusual grades (octane) - how to report? Back to Topics
Sophomore Author
New Haven

Joined:Sep 2007
Message Posted: Feb 26, 2014 9:43:14 AM

What is the protocol for stations that offer grades other than 87, 89, and 91 octane?
If (Shell I think) has a 91 octane High Test and a 94 octane Super High Test, which one is entered?
Does Sunoco still offer an 86 octane Extra Low? (If your car or lawnmower can run on it, that's what you'd use, instead of paying for octanes you don't need, you frugal Gas Buddy you.)
I've been to stations that offer 5 grades of unleaded gas, although the minor grades are often priced the same as the major grades.
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Champion Author Sacramento

Joined:May 2007
Message Posted: Apr 23, 2014 5:49:31 PM

Are you just trying to fit the right peg in the right hole, or is there some non-standard fuel you and other like-minded New Havenites are burning to know the current pricing for?
Sophomore Author New Haven

Joined:Sep 2007
Message Posted: Apr 23, 2014 10:56:50 AM

I'm not worried about medium-low and medium-high, but like klroth025 says, sometimes there isn't the typical high. Some places have an extra-low that I'd only use in a lawnmower (never checked, maybe it would work in my car) and it doesn't do most of us good to know they can buy something that is technically gasoline but not usable at that price; we need to know the best price for "regular" or whatever is the lowest grade that works for us.
Champion Author Houston

Joined:Nov 2005
Message Posted: Apr 20, 2014 7:02:43 PM

The octane values for different parts of the country are defined in ASTM D 4814. I don't think that most GasBuddies will want to buy a $59 technical specification to find out these details. I used to have access to ASTM D 4814, but the part of the company intranet that are available to retirees don't extend to the online technical library. So, just report the lowest value as regular, the nest higher value as mid grade, the next higher value as premium, and put any higher grades in the comment field if you can get to it with your method of updating prices. This doesn't apply to the occasional oddball station that has five different gas grades separated by only one point. I go past one of those when I'm driving up I-49 in Missouri and I've stopped there at least twice.

Rookie Author Cleveland

Joined:Nov 2008
Message Posted: Mar 18, 2014 5:18:26 PM

In the Cleveland, OH area, 87/89/91 is the norm, but Costco only carries 87/93. I report the 93 as premium.
Sophomore Author New Haven

Joined:Sep 2007
Message Posted: Feb 26, 2014 3:48:49 PM

Got it, thanks. It's by region, not by brand. Premium is that grade which is the octane which is generally Premium in this region. When I come across it I will report as such.
Champion Author Maryland

Joined:Aug 2004
Message Posted: Feb 26, 2014 12:35:39 PM

The "protocol", as indicated in the Frequently Asked Questions section of the website are: Currently you can search and post prices for regular, mid-grade, premium and diesel."

The common acceptance is that the pricing is for the most accepted local grade. That is, 87 octane is "regular", 89 is "mid-grade", and 91 is "premium". If there are discounts for certain forms of payment or extra-ordinary fuels, you can make such entries in the comments section; note however that the comments are not continuing and are removed when another member updates the prices for that station.

Essentially it's a matter of common understanding of what's regular, what's mid-grade, and what's premium, and subsequent "common sense" posting. Because there's a variance in octane levels in different areas, it would be difficult to have posting by specific octanes, which is something that many members might not actually know.
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