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Regular and Premium octane ratings in your area?

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Alberta Mike

04-28-2004 09:36:21

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Some fella told me that gasoline in the US has a lot higher octane rating for both regular and premium grades than up here in Canada. I see here that it is 87 and 91. Where do you live and what are your octane ratings? I assume the rating standard is the same wherever a guy might be.

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Ray,IN

04-28-2004 21:02:24

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

The octane in SW Indiana is the same as the guys from Michigan. This is interesting, the MF135 owners manual states: "The gasoline engine in the MF135 tractor is designed to operate efficiently on a reputable brand of regular grade gasoline(93 octane minimum)." Does anyone remember back to 1970 when regular gas was 93 octane? I do, and eythl(hightest) was 97 octane.

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MarkB

04-29-2004 03:07:29

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Re: Re: Regular and Premium octane ratings in your in reply to Ray,IN, 04-28-2004 21:02:24

You can't compare the Octane numbers from the early seventies to today's ratings. Nor can you compare aviation octane ratings with pump ratings. The number on the pump is an average of the "Research" and "Motor" octane numbers, which are quite a bit different. Before this rating became law, gas stations naturally listed the higher number of the two. Hence the old numbers are much higher than today's ratings.

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Stick

04-28-2004 22:47:02

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Re: Re: Regular and Premium octane ratings in your in reply to Ray,IN, 04-28-2004 21:02:24

In '71 we could get 106 octane here. By 76, there wasn't even any leaded gas left, never mind premium of any sort. Now they sell the "premium" that's just more expensive, and is no better than the horse pee they pass off as regular.

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J.C. IN AZ.

04-28-2004 20:59:48

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

WELL THIS DATE 4/28/04 IN WICKENBURG AZ. GAS PRICES ARE $2.09.9 REG 87 OCTANE,$2.19.9 FOR THE NEXT GRADE AND $2.29.9 FOR THE TOP GRADE AND YOU CAN TAKE A GUESS AS TO THE QUALITY OF GAS OR DIESEL HERE IN AZ.I AM OH SO THANKFUL THAT BOTH OF OUR VEHICLES ARE COMPUTOR CONTROLLED AND FUEL INJECTED BECAUSE CARB. EQUIPPED ENGINES DO NOT RUN VERY WELL AS WELL AS FAILING THE EMMISSIONS TEST ON A REGULAR BASIS.WE HAVE CUT OUR DRIVING IN HALF FROM A YEAR AGO.

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Dean Barker

04-28-2004 20:54:54

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

Regular 87, Ethanol 89 or 90, Premium 91. This is in Northern Iowa.

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MarkB

04-28-2004 19:29:29

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

I've noticed that octane ratings here in Michigan are significantly higher (87-93) than they are out west. I always assumed that this is because of the higher elevations in the High Plains and the Rockies.

Does Canada use the same "(R+M)/2" pump rating that we have in the US? If not, then you might not get meaningful comparisons.

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Stick

04-28-2004 18:00:03

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

87 and 91 in Saskatchewan. I always find this amusing, because when I bought my Harley brand new in 1978, it called for minimum 93 octane leaded. Even back then, I couldn't get that anywhere in Canada. The bike barely ran, and I tried everything to get the pinging to stop. As soon as I crossed the border and filled up with real 96 octane gas, it ran like the proverbial raped ape! I finally wound up going to low compression pistons just to get the pinging to stop, but it cost me a LOT of power!

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buickanddeere

04-28-2004 16:23:17

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

Everyone but Sunoco and their affiliate stations sell 87,89 & 91. Sunoco has the 94 which allows another 3-4 psi extra boost on the Grand National. 79.9 cents per liter for 87, 84.9 cents for 89 and 91.9cents for 94 octane. Don't how they justify an extra 5 cents for two points of octane and 12 cents for seven points? Until 10 years ago 89 was the base grade gasoline. Everything I have knocks or rolls the timing back with the computer in the summer on 87 octane. Aviation 100LL was 95 cents per liter last October.

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south east US

04-28-2004 19:59:51

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Re: Re: Regular and Premium octane ratings in your in reply to buickanddeere , 04-28-2004 16:23:17

Around here if regular sells for say $1.659 you would just add 10 ¢ per gallon to get the higher grade price.
1.659 regular 87
1.759 plus 89
1.859 prem 93

Now check my math here. If their is 3.79 liters in a gallon that would translate to only a .026 ¢ per liter differance between grades.

Lets try one other coversion. Your prices quoted would be in gallons...
3.028 regular
3.217 plus
3.483 prem

And we complain about the price of gas here in the US.

One other note. While I will not tell you what the store pays for gas I will say that the store in my area today paid the following.
If regular were free or 0.00
then 89 plus would be 0.0315
and 93 prem would be 0.0915
Remember they charge 10 ¢ extra for plus and 20 ¢ extra for prem. per gallon
And that would translate to in liters
87 regular 0.00
89 plus 0.0083
93 prem 0.0241

Please check my math because I am not the best liter to gallon converter.

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buickanddeere

04-28-2004 21:10:31

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Re: Re: Re: Regular and Premium octane ratings in in reply to south east US , 04-28-2004 19:59:51

Plus we are taxed at a higher rate on the paycheque before even purchasing the fuel. Also it takes about $1.35 Canadian pesos to purchase one US dollar.

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Jim.UT

04-28-2004 15:31:49

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

Octane requirements decrease with altitude. That's why octane where I am (5000 feet elevation) is 85,87,91 same as in Matt in Wyoming.

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49 Cubber!

04-28-2004 15:09:52

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

87,89,93 I think is what it is here.I use diesel so I done pay much attention anymore to gasoline.

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Matt K

04-28-2004 13:49:49

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

Here in Wyoming (and other Rocky Mt. states) 'regular' is 85 octane. Premium is 91/92. Mid grade is 87 or 89.

I used to buy 110 octane fuel in 55 gal drums for my racing snowmobile. Check out Link

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hay

04-28-2004 13:12:35

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

87, 89, 93 in se texas

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Indydirtfarmer

04-28-2004 11:30:52

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

87, 89, and 93 at most stations. Some carry 92 or 94 octane. A couple have "racing gas" or what they sell as such. It can run from 97 to 104. Be prepared to leave your first-born for a gallon of that 104! John (Indiana, and Kentucky)

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JMS/MN

04-28-2004 11:03:20

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

I have a tendency to disbelieve outhouse lawyers. Around here it is 87, 89, 91.

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Ben in KY

04-28-2004 10:51:47

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

87,89,93 here in KY. All expensive, might have to set up a still and run my machinery on alcohol.

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john in la

04-28-2004 10:03:11

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

87; 89; 93
couple of months Shell came out with a 94 but it did not sell well enough to justify seperate tanks at the loading racks; so they went back to 93.
New Orleans, LA.

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sammy the RED

04-28-2004 09:40:39

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Re: Regular and Premium octane ratings in your are in reply to Alberta Mike, 04-28-2004 09:36:21

87, 89 and 91 at most stations in Michigan.

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RayP(MI)

04-28-2004 16:57:21

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Re: Re: Regular and Premium octane ratings in your in reply to sammy the RED, 04-28-2004 09:40:39

There are a number of ways of measuring octane. If memory serves me right, Michigan requires a combination of two different methods, for their posting on the pump. Other methods may vary in the results. Your mileage may vary... etc.

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