Answer (1 of 11): “Octane” is a measure of a fuel’s ability to resist detonation. A 93 octane gas is more resistant to detonation than an 87 octane fuel. Contrary to what many people think, octane is not a more powerful fuel. I remember quite clearly the. Also, at least for now, the cost isn't significantly more...$1.80 for regular-87, $1.95 for ethanol-free 98, $2.05 for regular 98.No clue why the ethanol-free 89 is cheaper than 10% ethanol 89 but it is. Does anyone know if there would be concerns running 89 octane fuel instead of "regular" gas that is 87?. 6 Compares diesel engine performance vs. a comparable gasoline engine, and the. When ethanol or MTBE is added to 85 octane gas (10%), it becomes 87 octane gas. A version of "BOB gas" with a higher octane is designed to be blended with 10% ethanol or MTBE to give you 93 octane premium gas. (I believe that this gas without the ethanol is sold as ethanol-free gas and has an 89 octane rating). If your car was designed for 89 octane, a slight improvement as the engine will run better. 87 octane will cause a decrease in mileage as the engine management system will ‘tune-down’ the engine to cope with the lesser octane fuel. lenjack April 20, 2008, 1:52am #3. It is entirely possible that using higher octane than needed will LOWER. Generally, you will get better performance and gas mileage with higher octane depending on how you drive. If you know what your mileage is when you use 87 octane, then switch to using 89 octane for awhile and then calculate your mileage. 89 is usually 10 cents more per gallon or $2.00 per 20 gallon fillup. Generally, you will get better performance and gas mileage with higher octane depending on how you drive. If you know what your mileage is when you use 87 octane, then switch to using 89 octane for awhile and then calculate your mileage. 89 is usually 10 cents more per gallon or $2.00 per 20 gallon fillup. Regular gas carries an octane level rating between 85 and 88, with an average rating of 87. Plus grade gas carries an 88 to 90 octane level rating,. 87 vs 89 Octane. Close. 2. Posted by 4 years ago. 87 vs 89 Octane. ... Before my car had the Stage 2 power pack on it (which requires 91 octane or better), I did a test with 87 vs. 93 octane for fuel mileage. It was a best case scenario for the 87, all highway, very little load on the engine, etc. On the same route, same weather conditions. The higher an octane number, the more stable the fuel. Retail gasoline stations in the United States sell three main grades of gasoline based on the octane level: Regular (the lowest octane fuel-generally 87) Midgrade (the middle range octane fuel-generally 89-90) Premium (the highest octane fuel-generally 91-94). Luckily there are several independent gas stations that still have 87/89/92 octane non-ethanol REAL gas. Use it in my older mowers, lawn tractor. Last edited: Jul 9, 2021. Reactions: GitRDone, dondonbabyraptor and OrangeStreak. BassRanger Well-Known Member. First Name Al Joined Aug 19, 2020 Threads 2 Messages 292. 89. Playway Other games ... M47 Patton Main Battle Tank, 1:87 Model Kit Roco 221. Tanks available include miniature, heat exchangerInteresting RC tank tank Leopard on the model fair ... the other pet tanks. And Geekvape Z 15mm T-62 tank (one kit) . Regardless if you are using compressed air or compressed gas, Pulsair is the #1 solution for. Octane amounts indicate how volatile a particular grade of gasoline is. Regular gas carries an octane level rating between 85 and 88, with an average rating of 87. Plus grade gas carries an 88 to 90 octane level rating, with an 89 average. Premium gas comes with a 90 plus octane rating that averages out to about 92. How different fuel grades burn. When ethanol or MTBE is added to 85 octane gas (10%), it becomes 87 octane gas. A version of "BOB gas" with a higher octane is designed to be blended with 10% ethanol or MTBE to give you 93 octane premium gas. (I believe that this gas without the ethanol is sold as ethanol-free gas and has an 89 octane rating). And if you flatly refuse to use ANY gas with alcohol, please go to one of the 16mm vs. 19mm SB threads. 😊 Pretty much every station where I live offers E10 and have dropped alcohol free gas.Both were/are 87 octane here. They used to have an intermediate gas between “regular” and “premium” at 89 octane priced half way. The use of 87 octane fuel saw a decline in boost for the EcoBoost. Regular gas carries an octane level rating between 85 and 88, with an average rating of 87. Plus grade gas carries an 88 to 90 octane level rating,. Q & A: What's up with that 88 octane fuel? By Frank Schultz [email protected] Dec 30, 2018 Updated Jan 2, 2019. Buy Now. Area gas stations have begun selling gasoline labeled as 88 octane. As gas prices go up, that 17 cent difference becomes less noticible than it was when gas was 98 cents a gallon in 2002 for 87 octane and premium was 1.15. The proportion then is (assuming 21 mpg on 87 octane) .98 per gallon is to 21 mpg as 1.15 is to x. Solve for x and to break even, you needed 24.7 mpg on premium. 89. Playway Other games ... M47 Patton Main Battle Tank, 1:87 Model Kit Roco 221. Tanks available include miniature, heat exchangerInteresting RC tank tank Leopard on the model fair ... the other pet tanks. And Geekvape Z 15mm T-62 tank (one kit) . Regardless if you are using compressed air or compressed gas, Pulsair is the #1 solution for. Nearly every gas station in America will have some form of range from 87 to 93. To put it in perspective, racing fuel uses 100 octane, and gas in Third World countries can dip below 85. Getty Images. My MY2000 Ford pickup (5.4 L V8, 9.0:1 CR) is spec'd for "87 AKI minimum". Performance and fuel economy is dramatically better with 88 - 89 AKI fuel, but there's no improvement above 89 AKI. My '09 Forester (2.5 L H4, 10:0:1 CR) does better with 88 - 89 AKI fuel in the summer, but an AKI of >87 does not seem to offer any improvement in the winter. The owners manual does say 87 minimum, which seams. to mean higher octane is ok. Anyway I don't like ethanol, my 04 FZ1 has run wonderfully on 91 non ethanol for 135,000 miles, which I believe is 87 minimum. also, but my 03 DL1000 is quite different than the FZ1 so maybe 87 with ethanol is the way to go. Anyone using 91 non ethanol in their v. The real difference: 91 octane gas cost 55 cents more per gallon than 87 gas. The more I think about it, 89 tune looks better '06 rcsb 4x4 5.3, Comp 212/218 low lift cam, LT's, Hooker Aerochamber, Transgo shift kit, CAI, Blackbear tune, Trutrac LSD, 4.11 gears and the TVS1900 mod. dahua website. Starting 3rd tank with 89 Oct. 2nd tank 19.28 mpg. I was avg. 18.5 mpg with 87 Oct and the smoth driving tech,'s. I pay 8 cents more for 89 at $2.13; therefore, a approx 4 % more in price so 18.5 x1.04 = 19.25 mpg. So it a wash so far. I'm on my 3rd tank of 89 and will use a forth and decide which to use. The three tiers of gasoline (87, 89 and 93 octane) are all next to. Most likely you will see no difference. 89 Octane gas is not better, nor more power-packed, than 87 octane gasoline. The only significant difference is the rate of burn. Your computer-controlled engine can make slight adjustments in either case. Any difference in the resulting mpg would be too small for a car owner to measure. Today, the octane boost to prevent knocks is provided by gasoline aromatics, which comprise more than 25 percent by volume of each gallon of gasoline.8 The primary sources of octane are petroleum refinery products, and ethanol. At most retail gasoline stations, three octane grades are offered, 87 (regular), 89 (mid-grade) and 91-93 (premium). Regular gas carries an octane level rating between 85 and 88, with an average rating of 87. Plus grade gas carries an 88 to 90 octane level rating,. The RV for sale is a Used 3890 Itasca By Winnebago Sunflyer Class A Gas by Itasca By Winnebago RV that is room enough for 6 RV-ers to sleep, of the 1990 Sunflyer, you're in control of the most innovative motor home on the road. ,500. 1988 ITASCA 22 SUNFLYER. Dash Covers Item #: 9080-1-89. Your RV is probably an excellent investment. And if you flatly refuse to use ANY gas with alcohol, please go to one of the 16mm vs. 19mm SB threads. 😊 Pretty much every station where I live offers E10 and have dropped alcohol free gas. Both were/are 87 octane here. They used to have an intermediate gas between "regular" and "premium" at 89 octane priced half way. In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88-90 (midgrade), and 91-94 (premium). Gasoline with an octane rating of 85 is available in some high-elevation areas of the U.S. (more about that below ). The octane rating is prominently displayed in large black numbers on a yellow background on gasoline pumps. As gas prices go up, that 17 cent difference becomes less noticible than it was when gas was 98 cents a gallon in 2002 for 87 octane and premium was 1.15. The proportion then is (assuming 21 mpg on 87 octane) .98 per gallon is to 21 mpg as 1.15 is to x. Solve for x and to break even, you needed 24.7 mpg on premium. Regular gas is rated at 87 octane in most states, while premium gas is often rated higher at 91 or 93. Fuel with a higher octane rating can stand up to higher compression before it detonates. Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time. On occasion, this occurrence will likely. Octane amounts indicate how volatile a particular grade of gasoline is. Regular gas carries an octane level rating between 85 and 88, with an average rating of 87. Plus grade gas carries an 88 to 90 octane level rating, with an 89 average. Premium gas comes with a 90 plus octane rating that averages out to about 92. How different fuel grades burn. And if you flatly refuse to use ANY gas with alcohol, please go to one of the 16mm vs. 19mm SB threads. 😊 Pretty much every station where I live offers E10 and have dropped alcohol free gas.Both were/are 87 octane here. They used to have an intermediate gas between “regular” and “premium” at 89 octane priced half way. The use of 87 octane fuel saw a decline in boost for the EcoBoost. Answer (1 of 5): Q: Is it true that there is no difference between 87 and 89 octane has when it comes out of the transport? Although the other answers have described the difference between these in chemical make-up and performance in internal combustion engines, I think they missed the second pa. Any difference in power output will be so small it isn't going to matter. As others suggested, figure out your average gas mileage on both types and then figure out the difference in cost per mile. For example: 87: $2.20/gal / 30 mpg = $0.073/mile. 89E10: $2.00/gal /. Also, at least for now, the cost isn't significantly more...$1.80 for regular-87, $1.95 for ethanol-free 98, $2.05 for regular 98.No clue why the ethanol-free 89 is cheaper than 10% ethanol 89 but it is. Does anyone know if there would be concerns running 89 octane fuel instead of "regular" gas that is 87?. 6 Compares diesel engine performance vs. a comparable gasoline engine, and the. Check out cheap diesel fun for Ford 6.9L and 7.3L IDI diesel engines, which will prevent da4My wife's car, 89 vs , 89 , D, All gas is the same otherwise, and 87 , It also calls for 91 octane which ... I know in the summer I get noticeably better mileage on 93 vs 87. 2014 Black Granite Metallic Cruze Eco MT. - Tint 35% front and 18% rear. The higher an octane number, the more stable the fuel. Retail gasoline stations in the United States sell three main grades of gasoline based on the octane level: Regular (the lowest octane fuel-generally 87) Midgrade (the middle range octane fuel-generally 89-90) Premium (the highest octane fuel-generally 91-94). And if you flatly refuse to use ANY gas with alcohol, please go to one of the 16mm vs. 19mm SB threads. 😊 Pretty much every station where I live offers E10 and have dropped alcohol free gas.Both were/are 87 octane here. They used to have an intermediate gas between “regular” and “premium” at 89 octane priced half way. The use of 87 octane fuel saw a decline in boost for the EcoBoost. Cars that use higher octane are made a little different where the shape of the cylinder head chamber is. ( If your car uses 87 you can use them all.) If your car requires high test, you must use high test to avoid pinging preignition and detonation. Octane is an engineers expression of a materials ability to turn to vapor. Regular gas is rated at 87 octane in most states, while premium gas is often rated higher at 91 or 93. Fuel with a higher octane rating can stand up to higher compression before it detonates. Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time. On occasion, this occurrence will likely. Estimated range with non-ethanol 87 octane is 500 miles per tank. Using E85, expected range is only 400 miles. Now the difference between 89 fuel with 10% ethanol vs. an 87 with no-ethanol, you won't notice THAT big of a mileage difference probably, but i've seen it be as much as 10% difference in mpg between 87 100% gas, and 87 w/ 10% ethanol. If your motor calls for. In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88-90 (midgrade), and 91-94 (premium). Gasoline with an octane rating of 85 is available in some high-elevation areas of the U.S. (more about that below ). 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