With respect to using lower octane gas than is recommended, the risk is getting detonation which can destroy an engine. Learn more about the affects of E85 gas on regular engines, and find the North Branch ethanol gas prices or the E-85 ethanol fuel price with the touch of a button. The "effective" Octane is what the pump states, as mentioned. It was the only 93 octane in town. With the continually increasing cost of gas these days and with everyone wanting to get the most out of their dollars, I wanted to figure out if paying for a higher octane gas was really worth the increased cost at the pump for any gains in fuel economy. Some gas stations may offer up to five different octane ratings, including a super premium, which typically has a rating of 93. esso+mobile=the worst. Some had the ethanol sensors- but that's it. I tell the difference when i dont use it. Search for cheap gas prices in South Carolina, South Carolina; find local South Carolina gas prices & gas stations with the best fuel prices. In the United States gas stations describe the types of gasoline based on the Pump Octane Number (PON). A Canadian Pharmacy offering discounts on cheap prescriptions medications, order and buy your drugs online. The US standard for gasoline is 87 octane for regular and 92/93 octane for premium. Getty Images. Since ethanol has less BTU energy than Gasoline, we suffer power/gas mileage loss when it is added to fuel, even though it is oxygenated. So even if it doesn't need HiTest no ethanol good, water bad. So far 87 is in 1st place with 93 running second. In South Carolina we have a good number of ethanol free stations, particularly around the Columbia area. Way better gas mileage and better running vehicle in my honest opinion. Octane is the most talked about property when it comes to gasoline. I had to drive my Lightning up there every week to get gas. I got my new 2014 Honda crv, which gas grade should I use currently, 87 or 89? The user manual says use 87 or higher. Stations get their gas from the nearest refinery, regardless who owns the refinery. It’s no surprise because selecting octane of gasoline is the only choice the consumer has, except what station to buy it from. Org is the website to use. But both ethanol and gasoline will dissolve different materials, and fuel systems that were designed for gasoline don't always do so well with ethanol. "Even in proper storage, 87 octane gas can start to degrade in 3 months; 93 octane fuel should last closer to 9 months before degradation is noticeable. Also Ethanol retains water and algae grows in your gas clogging fuel filters. It is a high-octane unleaded fuel that is more commonly used by imported and high performance vehicles. While we see it every time, many of us to do not fully understand what separates one grade from another. Unfortunately, if you live in a state that doesn't require labeling, you don't know if you are getting a TRUE 93 after ethanol, or 93 plus 2-3 giving you 95-96 octane. You should NEVER run E85 in a non-modified naturally aspirated engine. Since I was down to below a 1/4 of a tank I decided to give it a try. If you had 93 octane with 10% ethanol and 93 octane without any ethanol, the car would have the exact same performance except fuel economy. It burns less cleanly than gasoline. 93 octane fuel). So I run REC90 ethanol free gas plus some 112 octane race gas to bump up the octane because they'll knock on 90 octane. 3 Silverado (same drivetrain numbers) allowed a good amount of timing before any hint of KR, was tuned for towing and 87 octane. E15 is only appropriate for use in Flex Fuel vehicles or a very small percentage of the newest vehicles. 93 octane pump gas should be fine. Up until a few years ago, before they figured out how to move ethanol mixed gasoline through a pipeline, the product was usually what they call "Splash-Blended" at the rack. Two common octane ratings are 87 and 91. When I purchase fresh gas, I immediately treat it with Stab-Il. Overall performance might very well improve, as "real" gas has more energy content than fuel laced with 10% ethanol. would require much higher concentrations of ethanol, as. It is a high-octane unleaded fuel that is more commonly used by imported and high performance vehicles. : Ethanol-free gas packaged in small cans that promise. The experts at Mowers Direct discuss the issues that can arise using gas with mowers. Nothing wrong with that either, except your car wasn't made for it. It feels snappy on the 93 w/ethanol and lazy on the REC90/Race gas. Heck -- that rubber is over 50 years old! Replace them anyway! The other side effect can be a nuisance. Its hard to find non ethanol gas but I try getting it every chance i get. E85 ethanol has an octane rating of 100-105, versus 85-95 for gasoline, but manufacturers do not tune E85 ethanol-capable engines for higher performance than their gas-only counterparts. I do prefer top-tier 93 but locally it costs an extra 20 (or 50) cents per. This is the go to 93 octane finder! But I can't find all gas stations that serve 93 octane gasoline on my own. The state inspectors will (99% of the time) have an up to date list of all the gas stations in their respective areas and can tell you who has ethanol free gas. Whether you've got a boat, 2-cycle engine or a seasonally driven vehicle, this ethanol-free fuel is easy on your engine and delivers the most efficient power - leading to more miles per gallon on the road and more hours per gallon for small. It's a measure of how resistant the gas is to combustion (it's a very misunderstood measurement). As for political issues, I don't see them being any worse than middle-east sourced brands. The octane rating is a measure of a fuel’s ability to avoid knock. Thus, refiners would still use it even if. "Even in proper storage, 87 octane gas can start to degrade in 3 months; 93 octane fuel should last closer to 9 months before degradation is noticeable. Husky 246 and 346's doing brush control, never burned a saw up. Ethanol cannot be shipped in pipelines economically because it has a great affinity for water and water is often present in pipelines. The river area I frequent in Arizona has E85 readily available, and while it may or may not be cost effective to run it at times I think it would be interesting to do a build. On the face of it ethanol actually has a slightly lower energy content than gasoline per kilogram, but it also has a much richer stoichiometric AFR (9. Most of the people I interviewed either wanted only pure gas, only ethanol or they didn't care one way or another. Most gas stations offer three octane grades: regular (usually 87 octane), mid-grade (usually 89 octane), and premium (usually 92 or 93). No chemical agent or fuel additive can be added to E10 gasoline, in a reasonable quantity, that will fully prevent phase separation or recombine a phase-separated layer. The current standard for most of the US is 87 octane for regular gasoline. I did a little research on fuel Stoich values. low octane, and high ethanol last I checked. Driving on the 93 Octane yields 25 mpg so the driver is able to pass 250 miles for $35. In some country’s, E85 is a more popular gas than regular gasoline. 92 or 93 octane non-ethanol gas is generally available in parts of this state with a significant number of lakes and boating activity. You guessed it – ethanol. Ethanol free is what you should use in all small engines if you can get it (chainsaws, lawnmowers, weed whackers, etc. Thinner air = less compression on normally aspirated cars = lower octane requirement. In fact, it has more! Petro Canada’s 94 and Esso’s 93. 1: Octane rating of gasoline, as displayed at a typical gas station. 64G of 85 and filled rest with 93 octane (4:6) Now How do I know how much of ethanol left in my gas tank without the kit? lol I want to match the ratio to 5:5. Running 91/93 octane premium fuel vs 87 will also help to minimize engine deposits. I have not sat down with Rick recently, but the reason it is so expensive they buy it from a bulk plant in New Mexico. Understanding Gas Grades at the Pump A trip to the gas station usually is a fairly automatic procedure, where we pay, select our gas grade, and pump to our desired level before leaving. Ethanol is also easily bio-degradeable if it should leak into our environment. It just varies from station to station, and it's up to the station owner whether or not to sell pure gas. Octane is the most talked about property when it comes to gasoline. 93 pure, if you have it close by. This is required by federal and provincial regulations. Ethanol's 113 octane rating makes it a desirable octane booster in gasoline-ethanol blends, but if low-octane fuels begin to become acceptable in the marketplace, despite automaker warnings and environmental concerns, ethanol's high-octane rating won't carry as much value. Paying more for less ethanol in your fuel is more straightforward, as the more expensive grades of gasoline tend to have less ethanol content. 25 per gallon is about 5% more, so it's worth the trip dollar-wise plus the satisfaction of no worry about the ethanol is priceless. I was surprised to see their highest octane was 90. E10 is 10%ethanol in gasoline, which is the US all fuel has 10% ethanol. I'm in central Iowa visiting relatives, and I've noticed something strange: gas stations are selling 'Super Unleaded' high-octane gas for as much as 10 cents less than 'Regular Unleaded'. If ethanol is in the gasoline, it is limited to no more then 10 percent of the total volume for conventional fuels. Based on this, Stoich for pure 93 octane gasoline is 14. For every percent of ethanol in your fuel you have the equivalent in loss of power. All the engines seem to run smoother and none have carbon on the plugs. The Bio-power is turbo charged and when it uses E85 it switches to a higher compression ratio. Ethanol is made from natural renewable sources and can be blended with petroleum based unleaded. Even the 93. Refer to your owner's manual or manufacturer to ensure your lawnmower, chainsaw or other equipment is compatible with ethanol-blended gas, or for tips on how to preserve your engine. Today's gas is pretty-much gasohol. from Maryland enroute to moving to Salt Lake City. The Hwy 20 exit is the first one on the Rock Freeway that is outside the EPA non-attainment zone and can sell non-ethanol gas. All the pumps on the south side of the building all grades have 10% ethanol, 87,90,93 octane. It has a 85 octane. Stuff that sits more than it is running. In addition, as Argonne National Laboratory states, ethanol reduces greenhouse gas emissions between 34 to 44 percent compared to gasoline. The engine is made to run on the ethanol gas. It actually has much higher octane rating than most gas, so it's used to raise octane as well as corn prices, and that effect in an engine is good. I did not know at the time how much of a negative effect the ethanol has on the 2 stroke machines. I doubt I will try 87 octane in summer but I might, since it is the minimum supported octane and should never cause heavy knocking if engine is operating properly. Most of the people I interviewed either wanted only pure gas, only ethanol or they didn't care one way or another. Helps thin gas to aid in cold temperature starts, prevents gas lines from freezing, cleans garbage out of fuel system (ethanol is an alcohol, and we all know alcohols are excellent detergents) and oh yeah, raises octane levels. You can now fuel up at over 275 Stewart's Shops locations with Premium Non-Ethanol Gasoline. But, yes, technically if you mix 50/50 87-octane and 93-octane, you would get 91. That doesn't leave much time for gas to lose it's octane. I was surprised to see their highest octane was 90. Also, I like President Trump , however, I think we will have a tight supply of corn from all the flooding. Spread the word about the Gasbuddy community!. It just varies from station to station, and it's up to the station owner whether or not to sell pure gas. Just make sure you take advantage of that octane, or as everybody else has said it won't be worth it. so if you advance your timing planning for a 105 burn and you stop for fuel at a place selling 90, you aren't going to. They say ethanol is around 114 octane, e85 is around 106 octane. The engine is made to run on the ethanol gas. An ethanol-gasoline mix of 85% ethanol mixed with gasoline is called E85. I have replaced a lot of carbs on 4 cycle equipment due to gas setting in carb and ethanol deteriorating seals etc. The name "octane" comes from the following fact: When you take crude oil and "crack" it in a refinery, you end up getting. The auto ignition temperature of ethanol is lower than that of many gasoline, 360° compared to up to 460° for gasoline. So I'm a little paranoid about using ethanol gas in my vehicles. After hundreds and hundreds of hours, I've determined that my outboards prefer the 89 octane mid grade from my local fuel dock. Now, I did 2 tanks of 93 octane ethanol free. ) has when the compression (heat) reaches a certain point. Question: Vince, why not just fill up my car with 93 octane at the pump? Answer: That's a great question, curious reader! You see, most of our friends in more liberal states like Cali have a hard time even FINDING 93 octane fuel. A local gas station has ethanol-free 91 octane gasoline for sale. Gas station sells ethanol free 91 octane for 15% more money compared to E10 87 octane. Gasoline with ethanol decreases the life of the engine and its parts. Meets California RFG Requirements. In reference to non ethanol gas versus ethanol gas. For example, 84 octane gasoline is typically blended with 10 percent ethanol to reach the minimum octane requirement of 87 for retail gasoline. Nothing wrong with that either, except your car wasn't made for it. A) Ethanol has a lower fuel content than petroleum fuels. Why High-Octane Gas Costs So Much More Than Regular. Is anyone else having this same problem?. The second objection was that a plan to increase E85 demand in the Midwest is unnecessary because refiners across the country need ethanol to boost the octane of gasoline. piston damage. Therefore, if you're buying 93 gas and you add a booster that increases it by 3, your level will. If you could find ethanol free 93 octane you'd probably get a little better mpg but the power would likely be the same. With respect to using ethanol gas in a plastic tank 1098, AFAIK this will over time lead to tank swelling. Now for the rider mower, snow blower, the wheelers and all my little engine machines non ethanol is ideal. E10 is 10%ethanol in gasoline, which is the US all fuel has 10% ethanol. This does mean that adding octane booster to 87 octane fuel should yeild an increase. There is also a pocket in Florence, and one near Charleston. The best aviation gas to get for your small engine would be a low-lead one with an octane rating of 100 or slightly less. So the higher octane fuel you add the booster too the less effect it will. So even if it doesn't need HiTest no ethanol good, water bad. If you choose ethanol free you’re taking money away from American corn farmers (since the entire Midwest can’t seem to grow edible corn) and adding greenhouse gasses blah blah so you buy the ethanol stuff and get 1/1000th hp boost. All I can say is for the considerable higher cost of premium, the benefits were not there. Storage life aside older boat motors were not designed to run E10 gasoline. The three tiers of gasoline (87, 89 and 93 octane) are all next to each other on the pump and it's not hard to absentmindedly. Search for cheap gas prices in Miami, Florida; find local Miami gas prices & gas stations with the best fuel prices. Guys are also making more power running e85 when tuned properly. 00 dollars and the cost per mile will $0. If you add an octane booster to your fuel to make up for the efficiency you loose by running ethanol enhanced fuel, you are chasing your tail. Heck -- that rubber is over 50 years old! Replace them anyway! The other side effect can be a nuisance. High octane is one reason why NASCAR uses ethanol for their high-compression racing engines. I just filled it up with 93 and will probably run that until the weather “cools off” then switch back to 87. January 30, 2015 at 9:28 am. Some useful features would be allow users to post gas prices, post the grades of fuel that no ethical fuel is available. Again, I can not verify this, but I do agree that the 87 octane gas is some real crap. 75 a gallon that was also an expensive option. Ethanol is way cheaper and is often more readily available than race gas. Safe to use in all gasoline blends, including Ethanol. If you fill up with 91 or 93 octane, you’ve no doubt grumbled, “How the hell is high-test 50 cents extra?” At 115 octane, ethanol. I tried 93 Octane Shell a few years ago and it was no better then the 87 in my V6. This process also reduces the octane in the gas by as much as 4 points (if octane level is 89, it can be reduced down to 85) · Ethanol reduces efficient combustion, which decreased performance, leads to stalling, and your cart to running roughly. But it's generally between 94 and 105, which puts it much higher than even premium gasoline. com is completely reliant on user submissions. would require much higher concentrations of ethanol, as. There is a couple of versions in the unleaded, no ethanol, 94+ octane range, 100 octane, and then starting around 108 or 110 octane, they are leaded. There is less ethanol with higher octane. OK -- I did run 93 octane in my truck and it seems to idle smoother and have a little more pep but I could not see any increase in gas mileage to justify the additional cost of 93 octane fuel. All the engines seem to run smoother and none have carbon on the plugs. There are multiple problems with this argument. 93 octane fuel). I know most here are baby boomers so that is possible. 760 specific gravity rating. Don't you pretty much NEED a higher octance on FI to prevent detonation?. The octane of E85 can be from 100 to 105 or so. Comparing E10 to regular unleaded fuel would be comparing apple to orange. I use it for storage over the winter, but have noticed poorer mileage with it under normal use. It claims to have 5 times the amount of gov't standards for cleaning agents and minerals. There's no need to run a small lawnmower. They are not high compression engines and rarely have an issue with pre-ignition. Neither do they vary horsepower ratings for E85 ethanol flex-fuel engines. Cleans Fuel Injectors; Reduces Knocks, Pings and Hesitation. I tell the difference when i dont use it. I think that maybe Shell gas doesn't have ethanol in it? I would like to try 100LL airplane gasoline(100 ocatne, low lead) but it's about $5 a gallon. 00 a Gallon for mix is a bit much. The gas at my local station in Cocoa costs $4. The man at the airport said they're trying to encourage people to use unleaded lower octane fuel instead. And 90 is way the fuck more than fine. E85, is a motor fuel blend of 85 percent ethanol and 15 percent gasoline to be used in flex-fuel vehicles. If you have an older four-stroke, or nearly any two-stroke engine, whether it’s in your classic car, the outboard motor on your boat, or in your weed trimmer or lawn mower, you probably know that ethanol can be damaging to the fuel system. "This engine is specifically made to take gas that's mixed with ethanol. Welcome to the definitive list of stations that sell pure, ethanol-free gasoline in the U. 93 octane non ethanol gas? If this is your first visit, be sure to check out the FAQ by clicking the link above. Generally, regular is 87 octane, mid-grade is 89 octane, and premium is 91 or 93 octane. You can mix any of them with pump gas and the resulting octane is a straight weighted average of the quantities used. The "effective" Octane is what the pump states, as mentioned. If you are worried about ruining your car, you really cant hurt it as much as you think with going a tiny bit over on octane. Ford Mustang Forum My father refuses to put anything but ethanol free in his car, but he lives where it is. Premium gas, such as 93 octane, helps high-powered cars run smoothly and efficiently. Is Premium Fuel Worth It? Nearly every gas station in America will have some form of range from 87 to 93. But its pump octane rating is 105, considerably higher than premium pump gas (93 to 94 octane) and comparable to racing fuels. Again, I can not verify this, but I do agree that the 87 octane gas is some real crap. If you had 93 octane with 10% ethanol and 93 octane without any ethanol, the car would have the exact same performance except fuel economy. Spend the money and get the good stuff. Ethanol has an octane rating of about 108. Perhaps I've forgotten what the car should feel like, but I don't think performance is suffering, fuel efficiency hasn't changed much if any, and it doesn't stumble or stall. I'm no fan of BP right now but I ain't putting ethenol in my boat just to spite them. Ethanol-free gasoline can be found with 87-, 89-, 91-, and 93-octane ratings. I do try and run E0 -- pure gas -- whenever I can and if it makes sense. 5MPG as well. Get their tips for proper mower fuel use, including ethanol ratings and fuel stabilizer choices!. Honestly though I think the bike runs better on 93 w/10% ethanol. Top tier premium fuel has more (and better) additives that have a detergent effect which in part helps keep the TB and top end cleaner than you would get from lower octane fuels. It's a measure of how resistant the gas is to combustion (it's a very misunderstood measurement). The Bio-power is turbo charged and when it uses E85 it switches to a higher compression ratio. Literally all you can do is as see a list of gas stations. and the ethanol percentage can. 5 mpg, that was a 20% increase in mpg and seemed a fair comparison, whilst I don’t like the higher cost of ethanol free gas, it definitely seems to make my expedition run moe efficiently!! as others have stated, I use ethanol free in every vehicle that has a carburetor as I have. Here in Eau Claire one of our Kwik-Trips sells the "recreational gas" with no ethanol. I have always used 93 Octane fuel in my cars. effective octane number and efficiency advantages of direct injection engines that use methanol as a fuel. Based on this, Stoich for pure 93 octane gasoline is 14. You can call the GA Dept of Agriculture and ask for fuels and measures. Of course, there’s a downside to the ethanol-free gas and that’s the cost. The square yellow octane stickers you see on gasoline dispensers indicate the (R+M)/2 octane rating. I don't notice a huge difference between 91 and 93 octane gas in the Z, but when I had my Saab that was putting out 310whp, using 93 octane was a big big difference compared to 91. I have run 93 with and without ethanol in all my small motors and my boat since I was old enough to start paying for all my own stuff. That would be my choice. Spend the money and get the good stuff. Keep in mind that your octane level will be the octane number of the gas you're buying plus the amount the octane booster ups your level. Non-ethanol gas will not appreciably lose octane for about 90-110 day but 10% ethanol gas will drop about 4 octane points in about 30 days. That list is pretty accurate as far as I can tell. TS111 in the Texas heat. Spend the money and get the good stuff. If I can get Non Ethanol pump 93 octane then I sometimes mix it with a couple gallons of AvGas (Straight AvGas is not a good idea. The station with the ethanol-free gas in the one right next to the Five Guys. When you take a closer look, you see the 51% ethanol gas is for flex fuel vehicles only. Now for the rider mower, snow blower, the wheelers and all my little engine machines non ethanol is ideal. 50 higher, it doesn't benefit me to go find it and get it since the cost/mileage difference is exceeded by the ethanol infused gas. I've been wondering this for a while now. Ethanol is a non-fossil fuel that is produced from a variety of agricultural crops such as sugarcane, corn and wheat. The man at the airport said they're trying to encourage people to use unleaded lower octane fuel instead. If you fill up with 91 or 93 octane, you've no doubt grumbled, "How the hell is high-test 50 cents extra?" At 115 octane, ethanol. There are ethanol free 91 octane pumps nearby, and I occasionally use that. Typically your choices are 87 octane, 89 octane and 93 octane. You have to understand the basic fundamental reason you retard timing on a nitrous motor. I have run 93 with and without ethanol in all my small motors and my boat since I was old enough to start paying for all my own stuff. I know the gas is expensive but you generally do not fill the whole tank with it, you can mix it with the right amount of 93 octane and still get the same effect. Ethanol actually has 10% less energy content per unit than regular gas, so if it’s 10% ethanol that’s like regular gas with 1% less power. TOLUENE IS A COMMON OCTANE BOOSTING COMPONENT Toluene (methyl benzene) gives about 1 octane number boost for each 5% added. Gasoline with ethanol decreases the life of the engine and its parts. So if you're in the US and you have to use 10% ethanol gas,. Esso starts to have 93+ octane gas in Ontario. I have found a few C/P 66 stations with PURE GAS, but it is 91-octane. Ethanol could be harmful to your classics engine so it’s important to make sure you are getting the lowest ethanol based fuel. HD price that is. 3, 4L60E, 3. With a 97 Cobra pretty much daily driven would it be better to go 90 octane E0, or 93 octane E10? I'm not the least bit worried about mpg, more so about possible long term damage to fuel system or engine. How much ethanol is in gasoline, and how does it affect fuel economy? The U. I have a 2005 Nissan Murano and on that trip had a Thule cargo box on top. Premium gas, such as 93 octane, helps high-powered cars run smoothly and efficiently. To Magazine Home Page. NOTE: There are two Liberty stations within a block or so on Berryville Avenue. Premium ethanol infused gas costs around $3. Ethanol has an octane rating of about 108. The difference is Ethanol (like diesel) doesn't chuck nearly as many BTUs out the exhaust. There's an ethanol selection, an 88 octane as well as 87, 89 and 93. There is not another gas station close to my house that sells ethenol free gas so I buy mine there. Shell's VPower 91 has no ethanol, but it does have some engine additives. The engine is made to run on the ethanol gas. When I use 87 ethanol-free fuel, the light doesn't come on no matter how much highway driving I'm doing. We are putting together a list of gas stations that are recently verified as offering 93 octane gasoline with no ethanol. More and more stations around here are adding ethanol free 87 octane and about 75% have ethanol free premium (91 octane). Since 100-octane racing gas may sell for five to six bucks per gallon, and 105-octane can knock you back as much as 10 to 12 dollars per gallon, at less than three bucks per gallon E85 starts to. Octane | C8H18 | CID 356 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards. The car pulled the strongest it has ever run during these 2 pulls. Have been using 100 octane LL AvGas in my 2014 350xcf. I am still an idiot when it comes to these engines. For every percent of ethanol in your fuel you have the equivalent in loss of power. Regular gas with 10% ethanol was $3. What Happens If You Put the Wrong Octane of Gas In Your Car. If your car engine is optimized for 91-93 octane fuel, and you use less, the car will adjust itself in two ways. Most gas stations offer three octane levels: regular (about 87), mid-grade (about 89) and premium (91 to 93). If you could find ethanol free 93 octane you'd probably get a little better mpg but the power would likely be the same. 38 billion gallons of fuel ethanol, equal to about 10% of the total volume of finished motor gasoline consumption. Those are not the choices you are most likely to see at your local gas station. Ethanol blended into gasoline has an average octane rating of 115, significantly higher than the gasoline octane rating at retail stations for regular (87 octane) and premium (91-93 octane) gasoline. 93 Octane Gas Finder. My bike is a v-star 1100 custom made in 2007. No more expensive race gas, find out how much octane booster you need. In all reality, in doesnt cost but maybe $4-6 more. My bikes tank warps and bubbles all kinda weird when there is water or water vapor in the gas and if I leave it a week without Stabil it warps a litte and if I leave it 3-4 weeks the gas tank is almost unrecognizable. Most gas stations offer three octane grades: regular (usually 87 octane), mid-grade (usually 89 octane), and premium (usually 92 or 93). I use Shell gas with no ethanol. If you know of any others, please send them in and we'll put them on the map. Only time will tell. If you know of any others, please let us know by clicking the "report station" button to the left. I feel it is a small price to pay for better gasoline considering five gallon will last quite a while. I just moved from Virginia to Georgia and there is a Valero gas station near my house that sells ethanol free gas, but only up to 90 octane. I have to drive 30 miles to get Ethanol free gas. re: 93 octane in tulsa/ba by Guest on 9/27/2009, 12:48 pm Yes Ethenol resists detonation, But One unit of ethenol blend gas has only 3/4 the energy as one unit of pure gas. Here in the Midwest, it's pretty standard for gas stations to offer 3 grades/octane ratings of gas. It seems the stock tune is pretty maxed out for 93 octane on the 18-19 5. Re: What octane gas for chainsaws? The problem is the goverment is pushing the addition of ethanol to all gasoline to extend supply. You do have to get out of the EPA identified areas mandating oxygenated fuels (ETOH or MBTE). Available in three octane levels, our Synergy gasoline has been engineered to help clean up intake valves and improve gas mileage and performance. Gasoline with ethanol decreases the life of the engine and its parts. The ethanol in E10 gas breaks down quickly. Its hard to find non ethanol gas but I try getting it every chance i get. As far as the Northstar goes (early 93~99 and 2000 to beyond) which gas is better for fuel economy and which one would yield better performance, if any?. Selecting the Right Octane Fuel What is octane rating? Octane rating is the measure of a fuel's ability to resist "knocking" or "pinging" during combustion, caused by the air/fuel mixture detonating prematurely in the engine. I tried it my self in my 2500 with a 6. If your wondering what E85 is, it is a blend of 85% Ethanol and 15% unleaded gasoline. I had a half tank of 93 octane in the tank. I did some simple calculations and 20% E85 (17% ethanol) should be equivilent to 95 Octane gas when mixed with 93 Octane. According to Spec E30 rules, "Permitted fuel is unleaded pump gasoline, with a maximum octane of 93. There's no need to run a small lawnmower. As I mentioned before, independent random testing found the "up to 10%" 87 and 93 octane averages 0-6% ethanol. Ethanol-free gasoline can be found with 87-, 89-, 91-, and 93-octane ratings. Since I was down to below a 1/4 of a tank I decided to give it a try. At most gas stations in the USA you have 3 choices for unleaded fuel: 87, 89 & 91 octane. When you mix 10 percent 113 octane ethanol with 85 octane gasoline it increases the octane two points to the normal 87 octane most consumers use. The lower compression engines simply do not burn much of the ethanol. The kind of gas motorcycles should use is ethanol-free higher octane gasoline (no less than a 91 rating). If I can get Non Ethanol pump 93 octane then I sometimes mix it with a couple gallons of AvGas (Straight AvGas is not a good idea. In this E85 ethanol fuel test we look at the advantages of using E85 in your musclecar and demonstrate that this fuel is cheaper than 87 octane and can make the same power as race gas - Car Craft. While we see it every time, many of us to do not fully understand what separates one grade from another. I think you may have gotten better gas mileage from the gas having less ethanol, more than higher octane. This is a work in progress and the extent of the list depends completely on the participation of. 90 octane is very odd in this neck of the woods and I think I'd probably be better off buying 93, even with ethanol. That doesn't leave much time for gas to lose it's octane. Differences in octane level and the amount of ethanol added to gasoline can have a dramatic impact on fuel economy and emissions. 60-130 times stock with and without E85 - posted in R35 GT-R: I went out last night to do some 60-130 testing. 93 Octane w/ ethanol is perfectly fine for modern Porsches. The US standard for gasoline is 87 octane for regular and 92/93 octane for premium.