what octane gas is better for smog test
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Will my car pass the smog check using higher octane gas? And we certainly see a decrease in NOx without a significant increase in HC or CO. So, in some instances, buying a slightly higher octane fuel can both increase performance and help pass a failed emissions test. Generally, yes, spending money on higher octane than your owner's manual recommends is a waste of money. But sometimes ethanol tilts the scales. Of the 6 vehicles I've owned, 2 benefited from slightly higher octane-the other 4 suffered.
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The natural-gas alternative Air quality. CNG burns much cleaner than gasoline. According to the Environmental Protection Agency, CNG can reduce carbon-monoxide emissions by 90 to 97 percent and nitrogen-oxide emissions by 35 to 60 percent when compared with gasoline.
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Octane rating The octane rating is a measure of the resistance of petrol and other fuels to autoignition in spark-ignition internal combustion engines.
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- Road Octane Number [not to be confused with RON] is the rating of the gasoline, in terms of reference. fuels, by a test car under full throttle acceleration from 10 to 50 MPH. However, Road Octane. [Number] tests are too expensive for routine testing and are reserved mainly for special octane. requirement surveys.
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Octane rating A fuel with a higher octane rating is less prone to auto-ignition and can withstand a greater rise in temperature during the compression stroke of an internal combustion engine without auto-igniting, thus allowing more power to be extracted from the Otto-Cycle.he most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.
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High Octane Fuel Is Better There is a misconception in the world that high octane fuel will make your car go faster or run better. This isnot true. The octane rating only rates the fuel’s resistance to engine knocking. Knocking or pinging is a sound that an engine makes when the air-fuel mixture in the combustion chambers ignites too early.
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Selecting the Right Octane Fuel 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.sing a lower octane fuel than required can cause the engine to run poorly and can damage the engine and emissions control system over time. It may also void your warranty. In older vehicles, the engine can make an audible knocking or pinging sound.
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- 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.ou should use the octane rating required for your vehicle by the manufacturer. So, check your owner's manual. Most gasoline vehicles are designed to run on 87 octane, but others are designed to use higher octane fuel.
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The Truth About Gas! Does Premium Fuel Perform Better? Let's say Car B usually averages 30 mpg, requires 87 Octane and has a 10 gallon tank. The price for 93 Octane is $3.50 and the price for 87 Octane is $3.10 for our example. A full tank of 93 Octane will cost $35.00 while a tank of 87 Octane will cost $31.00.
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Selecting the Right Octane Fuel 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. In the U.S., unleaded gasoline typically has octane ratings of 87 (regular), 88–90 (midgrade), and 91–94 (premium).
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Gasoline A higher octane rating allows a higher compression ratio or supercharger boost, and thus higher temperatures and pressures, which translate to higher power output. Some scientists even predicted that a nation with a good supply of high octane gasoline would have the advantage in air power.
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Frequently Asked Question Tests conducted by the U.S. Environmental Protection Agency show that propane-fueled vehicles produce 30 to 90 percent less carbon monoxide and about 50 percent fewer toxins and other smog-producing emissions than gasoline engines. Propane is also nontoxic, so it's not harmful to soil or water.
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- Octane ratings. 1  Understanding octane ratings. 2  Octane rating is a measure of a fuel's ability to resist ‘knock’. 3  The recommended octane rating for most vehicles is usually octane 87, but be sure to check your vehicle owner’s manual.  In general, the octane needs of a vehicle align with the manufacturer’s recommendation.
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- CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads. Cadillac ATS General Discussion Forum Discussion, 2.0T which octane gas is best, performance vs. cost in Cadillac ATS Discussion Forums; Just picked up my ATS on Tuesday and it's time for a fill up. I know they say 91 octane ...
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What's in your gas tank? The grade of gas is set by its octane level. Essentially, the octane rating is a measure of the fuel’s ability to resist knocking, or premature ignition in a cylinder. In this part of the country, regular gas has an octane rating of 87, while premium is 91 or higher.
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Yamaha Outboard Motor Rep Recommendations If so, you should note: the recommended gasoline for most cars is regular octane. In fact, in most cases, using a higher octane gasoline than your owner s manual recommends offers absolutely no benefit. It won t make your car perform better, go faster, get better mileage or run cleaner.
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Gasoline The octane rating of typical commercially available gasoline varies by country. In Finland, Sweden, and Norway, 95 RON is the standard for regular unleaded gasoline and 98 RON is also available as a more expensive option.
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- Three. In the 2001 to 2009 Prius, no better gas mileage was measured for any gas other than the 87 octane (from a reputable station) recommended by Toyota. There is some evidence that high octane produced more power in hill climbs.ong term, use high quality 87 octane gas from busy stations. And the only fuels to stay away from are not gas, do not use diesel or E85 in a Prius. Hy-Bird said: ↑. I always thought the higher the gas the better it burn in the tank.
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Premium Fuel Futures Octane is Knock Resistance. And if you're using the fuel recommended by the automaker, that knock sensor rarely has anything to detect. Pure and simple, a gasoline's octane rating is a measure of its resistance to knock as compared to a particular pair of hydrocarbons. Isooctane, an especially knock-resistant variety, is 100 on the octane scale; at the other extreme, n-Heptane is 0.
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Paying a Premium for High Octane Gasoline? Octane ratings measure a gasoline's ability to resist engine knock — a rattling or pinging sound that results from premature ignition of the compressed fuel-air mixture in one or more cylinders. Most gas stations offer three octane grades: regular (usually 87 octane), mid-grade (usually 89 octane), and premium (usually 92 or 93). The ratings are posted on bright yellow stickers on each gas pump.
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(SOLVED PAPER The differences in these ratings. are the reference fuel blends used for comparison to the natural gas. The reference fuel. blend used for comparison to the natural gas for the MON is composed of iso-octane, with an octane number of 100, and n-heptane with an octane number of 0. However, since natural gas has a higher knock resistance than iso-octane, tetraethyl lead (TEL)
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- 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.
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New Smog Check Test New Smog Check Test Smog Check Program's Updated Test Technology Californians getting Smog Checks today may notice that the traditional tailpipe test used for many years has been replaced by a quicker, computer-based test for gasoline-powered cars model-year 2000 and newer, and for most diesel vehicles that are model-year 1998 and newer.
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What does octane do? Octane rating of fuel is the quality rating the resistance of a fuel to self combust at, IE dieseling. There are three octane rating systems.The first two rate the quality of the fuel at different temperatures and the third, the one we use in the United States of America, uses the average of the two.ctane rating is the resistance to burning. For example (not real number) a gas with an octane rating of 50 will burn at 100 degrees Fahrenheit whereas a gas with an octane ra … ting of 100 will burn at 200 degrees Fahrenheit. Higher the octane number the harder it is to burn.
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Octane rating Octane rating or octane number is a standard measure of the performance of an engine or aviation fuel.n contrast, fuels with lower octane numbers (but higher cetane numbers) are ideal for diesel engines, because diesel engines (also referred to as compression-ignition engines) do not compress the fuel but rather compress only air and then inject the fuel into the air heated up by compression.