Octane

Author	Message
Y block Billy	Posted 14 Years Ago
Supercharged Group: Forum Members Last Active: 7 Years Ago Posts: 1.6K, Visits: 5.2K	I am over in China and was at a gas station today and noticed their gas comes in 93 octane the lowest rating, the next one up is 97. Every country gets higher octane than we do, why is the US so cheap on octane? 55 Vicky & customline 58 Rack Dump, 55 F350 yard truck, 57 F100 59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?
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Philo	Posted 14 Years Ago
Turbocharged Group: Forum Members Last Active: 14 Years Ago Posts: 60, Visits: 489	Y block Billy (3/18/2011) I am over in China and was at a gas station today and noticed their gas comes in 93 octane the lowest rating, the next one up is 97. Every country gets higher octane than we do, why is the US so cheap on octane? Probably leaded over there......no environmental protection. How much per gallon, US? Just curious. FIGHT CONFORMITY!
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Glen Henderson	Posted 14 Years Ago
Supercharged Group: Forum Members Last Active: 9 Years Ago Posts: 1.4K, Visits: 7.5K	Hey Billy, did you go over there to pick up some of those good parts that they produce? Seems a little extreme to me because I find all I need here local! Glen Henderson Freedom is not Free Letohatchee, AL
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Ted	Posted 14 Years Ago
Co-Administrator Group: Administrators Last Active: 4 hours ago Posts: 7.4K, Visits: 205.7K	The fuel supplied at the Engine Masters competition was 91 Octane. In examining the spec sheet for that fuel, the MON (Motor Octane Number) octane was 86 and the RON (Research Octane Number) octane was 96; hence the 91 octane level which is just the average of the two. The EMC Y engine ran without issue on the 86 part of the equation but many other engines at the EMC did not. I’ve always considered the MON value the more important of the two as it’s this value that seems to have more control over actual detonation resistance than the RON value. Unfortunately, the number displayed on the front of the U.S. gas pumps is not the MON value but an average of both the MON and RON values. It’s because of this averaging that U.S. fuels of the same octane ratings can have different burn characteristics between brands or even batches (lots) of fuel depending upon the MON and RON values. That means that the 91 octane fuel available at one station may not be equal to the 91 octane fuel that’s available across the street. All we see on the front of the pump here in the U.S. is the average value. With that lead in, the octane value on the front of the pump is not a universal value throughout the world. Here’s the paragraph in Wikipedia that attempts to explain the regional differences in octane ratings which many times comes down to knowing exactly what that number on the pump represents. Generally, octane ratings are higher in Europe than they are in North America and most other parts of the world. This is especially true when comparing the lowest available octane level in each country. In many parts of Europe, 95 RON (90–91 AKI) is the minimum available standard, with 97/98 RON being higher specification (sometimes called Super Unleaded). The higher rating seen in Europe is an artifact of a different underlying measuring procedure. In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in Canada, the United States and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 8 to 10-point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in Canada and the US, would be 91–92 in Europe. However most European pumps deliver 95 (RON) as "regular", equivalent to 90–91 US AKI=(R+M)/2, and deliver 98, 99 or 100 (RON) (93-94 AKI) labeled as Super Unleaded - thus regular petrol sold in much of Europe corresponds to premium sold in the United States. In other countries "regular" unleaded gasoline, when available, is sometimes as low as 85 RON (still with the more regular fuel, 95, and premium, around 98, available). Here’s the link which goes into much more detail. http://en.wikipedia.org/wiki/Octane_rating Lorena, Texas (South of Waco)
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46yblock	Posted 14 Years Ago
Supercharged Group: Forum Members Last Active: 12 Years Ago Posts: 1.2K, Visits: 7.8K	The E10 gas we are forced to use is the real junk. I just cant understand why the state legislators here bought into the lobby to force the stuff down our gas tanks. We end up giving subsidies to farmers who should be growing food, in exhchange for high food prices and bad gas. Then add the extra trucks on the crowded highways to transport the ETOH. And with the reduction in fuel mileage, it makes no sense. About 3 or 4 years ago when it was mandated, many if not most of the gas stations had to tear out their gas tanks and install alcohol friendly containers. It had to be a big expense. Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.
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Y block Billy	Posted 14 Years Ago
Supercharged Group: Forum Members Last Active: 7 Years Ago Posts: 1.6K, Visits: 5.2K	Then there was the MTBE stuff they added for a while untill they found out it was giving everybody headaches, and I thought it was the Beer! 55 Vicky & customline 58 Rack Dump, 55 F350 yard truck, 57 F100 59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?
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The Master Cylinder	Posted 14 Years Ago
Supercharged Group: Forum Members Last Active: 4 Years Ago Posts: 974, Visits: 6.2K	Y block Billy (3/18/2011) Then there was the MTBE stuff they added for a while untill they found out it was giving everybody headaches, and I thought it was the Beer! Billy, Methyl Tertiary Butyl Ether (MTBE) is bad shtuff. Any unburned MTBE that come outs of your exhaust pipe contaminates the ground water, giving you more than headaches. (maybe your Beer was contaminated with MTBE?? haha). It was use to replace lead in gasoline as a anti-knock additive. It has since been replaced with other good shtuff. "The Master Cylinder" Enjoying life at the beach in SOCAL
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HT32BSX115	Posted 14 Years Ago
Supercharged Group: Forum Members Last Active: Last Month Posts: 452, Visits: 24.4K	46yblock (3/18/2011) The E10 gas we are forced to use is the real junk. I just cant understand why the state legislators here bought into the lobby to force the stuff down our gas tanks. We end up giving subsidies to farmers who should be growing food, in exhchange for high food prices and bad gas. Then add the extra trucks on the crowded highways to transport the ETOH. And withthe reduction in fuel mileage, itmakes no sense. About 3 or 4 years ago when it was mandated, many if not most of the gas stations had to tear out their gas tanks and install alcohol friendly containers. It had to be a big expense. Hey Mike, You ought to be able to find one of the (ethanol free) stations in the following list near you..... http://pure-gas.org/index.jsp?stateprov=OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally! --------------------- This post was created using OpenSuSE Linux x64 and Firefox
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Pete 55Tbird	Posted 14 Years Ago
Supercharged Group: Forum Members Last Active: 4 Years Ago Posts: 721, Visits: 93.2K	Speaking of octane ratings on gasoline in 1960 in the southeast of the US you could get unleaded AMACO hightest 104 octane gas for 35 cents a gallon. That was the only gas my 1958 Tbird convertible. with 11 to 1 compression would run on and not knock like crazy. My god how things have changed. As for ethanol in gasoline ask the lobbyist how much they paid your elected representatives for that. Pete
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HT32BSX115	Posted 14 Years Ago
Supercharged Group: Forum Members Last Active: Last Month Posts: 452, Visits: 24.4K	Y block Billy (3/18/2011) I am over in China and was at a gas station today and noticed their gas comes in 93 octane the lowest rating, the next one up is 97. Every country gets higher octane than we do, why is the US so cheap on octane? Probably not. There is only 1 manufacturer of Tetra Ethyl Lead (in the world) and that TEL is only used in AVGAS and racing gas. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally! --------------------- This post was created using OpenSuSE Linux x64 and Firefox
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