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Answered 2005-12-29 15:57:11

YES! It depends upon the car. Most typical vehicles don't improve mileage when running a higher octane gas. They don't have enough compression to justify the higher octane. Even in the rare cases a car does get better mileage than it might on lower octane, the improvement doesn't justify the cost. Some performance cars benefit from higher octane fuels. The realized benefit isn't better mileage; it's better power. For lots of great information, read the original Gasoline FAQ: http://www.faqs.org/faqs/autos/gasoline-faq/ It will neither increase your mileage nor your power. High-octane fuel is simply a cleaner version of the hydrocrabons used in regular unleaded fuel. It cuts down on the knocking because it is more resistant to self-ingnition. And knocking as many unfortunate people have found out, damages your engine. However, not all cars are able to handle high-octane fuels. Typically, cars made before 1986 are not equipped to run on high-octane fuel. Owners should check with their local dealer or manufacturer before using high-octane, or premium fuel, in their cars made before 1986. For most cars the answer is NO. Higher octane fuels burn slower so unless you can increase your initial advance you will not see any difference. Also when a vehicle is tuned to use lower octane fuel a higher octane will create carbon deposits and over time will cause engine ware, overheating, and poorer fuel economy. Todays igitions are computer controled many are distributorless so we shade tree mechanics can't mess with them. Many of todays vehicles recommend 91 octane but can use 89 or 87 if you don't hot rod them or over load them, more than two people. No, just the opposite. Lower octane fuels, say 87 pctane, have more hydrocarbons than higher octane fuels, say 91 octane, because the higher octane fuels have had non-hydrocarbon additives put in that reduce the capability to have the highest "burn" otherwise possible. The higher octanes are for cars with high compression engines and they are there to prevent knocking, which can damage the engine. This information is taken from the American Petroleum Institure website

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What octane does a 1995 Toyota 4Runner need?

A 3vze engine will take anywhere from regular 87 octane, up to 100 octane race gas. However what is your purpose to using higher or lower octane, Using regular, plus, or premium will work well. however higher mile engines would prefer 91 octane!

What is the lowest octane to use in an AD wagon?

87 octane regular is recommended. Using a higher octane is a total waste of money and will provide no benefits whatsoever.

If gasoline description is Super Plus then what does the Plus mean?

It means the gasoline blend has a higher Octane. Use the octane that the manufacture recommends for your car. If you are already using the proper octane fuel, you will not obtain more power from higher octane fuels. The engine will be already operating at optimum settings, and a higher octane will have no effect on the management system. Your driveability and fuel economy will remain the same. The higher octane fuel costs more, so you are just throwing money away.

What type of gas is best for 2001 corvette?

Using a higher octane than is recommended by Chevrolet, is not only a waste of money, but may actually harm your engine. No additional Power or MPG will result from using a higher octane fuel. That is a myth. Conversely using a lower octane will also harm you engine. So use Exactly what is listed in the owners manual.

What causes pinging in a 2011 polaris 550 ATV?

Try using a higher octane gasoline in this ATV. Many times the pinging is due to not using a 91 or higher octane fuel. A lower fuel like 85 or 87 may not be burning off as efficiently as the 91 octane which in turn will cause the pinging.

If a car has been given a certain type of gas for a long time would it hurt to start giving it different type of gas?

It would only hurt if the car required 89 octane or 92 octane and you went to a lesser octane. Those cars are engineered to run on a higher octane. A car engineered for the lower 87 octane might actually see some performance improvement by going to a higher octane once or twice, because the higher octane will help to clean the injectors a "little". Not much though. Over all there is no real significance to using the higher octane. The higher the octane level, the "richer" or "heavier" the fuel is. So if the car is not manufactured for the higher octane, you will eventually cause carbon build up at a faster rate than normal.

Using an octane rated higher than your vehicle?

Use the lowest octane that does not 'ping' (detonation). The higher octane is not only more expensive, it can, in some cases, cost you performance. Its got to do with things like the latent heat of vaporization and other scientific formulas.

Do you have to use 91 octane gas in a 1996 Cadillac Deville?

Use exactly what your owner's manual states. If it says 89 or 91 octane then do not use 87 octane. Using a lower octane that required may cause pre-detonation or what is commonly called (Pinging). Pinging may be harmful and may cause engine damage. Bottom line is to use no lower or higher octane fuel that the engine was designed to run on. Using a lower octane can cause engine damage, and using a higher octane is a waste of money that will provide not benefits whatsoever, and is nothing more than a myth.

What octane is recommended for a 1989 Honda accord?

87 Octane Regular. Using any higher octane is a total waste of money and will provide no benefit whatsoever. In fact it may cause hard starting. Use only 87 Octane.

What type of gas should you use on a 1996 Grand Am?

87 Octane Regular. Using a higher octane fuel is a total waste of money and will provide no benefit whatsoever.

Can you use 89 gas octane on a Honda Pilot?

Most experts agree that there is no measurable benefit to using higher octane gasoline. If your car says to use a higher grade, it should be heeded, but if not, use the "cheap" stuff.

87 and 91 gas?

Use exactly what your owner's manual lists. Using a higher octane than your engine was designed to burn, will provide no benefit whatsoever. No more power, no better mileage, and in fact can provide poor starting, and in some cases, harm the engine. Besides the fact you are paying more for high octane fuel you do not need. Using a lower than required octane can cause less power and pinging. This can eventually do damage to your engine. It is a myth that a higher octane fuel provides any benefit to an engine not designed to use the higher octane.

Which is better 87 octane or 93 octane non ethenol gas?

There is no better. If your car is designed to run on 87 octane then using 93 octane is a total waste of money. The higher octane will provide no more power, no better fuel economy, and is of no benefit to the engine whatsoever. In fact using a high octane fuel in an engine designed for 87 octane may actually cause hard starting. Use exactly the octane as recommended by the manufacturer of the vehicle. Saying that, if your car is designed to run on 93 octane then using 87 octane can be detrimental to the engine due to pre-detonation that will be caused by running the lower octane fuel. It depends on whether the manufacturer recommends the use of higher octane fuel or says it is mandatory. Most vehicles built in the last few years where 93 octane is recommended can run on 87 octane with a slight loss in power. The engine fuel management system will adjust for the lower octane and there will be no harm to the engine. The bottom line is to use exactly what the manufacture recommends.

Is 93 octane gas ok for a small generator?

Only if the engine manufacture recommends 93 octane which is highly unlikely. Most likely the manufacture recommends 87 octane and that is what you should use. Using a higher octane is a waste of money and will provide no benefit whatsoever.

Do you need to use 92 octane gasoline in a 2010 Lexus RX350?

Yes. Using a lower grade of fuel then is recommended will reduce your mileage, performance, and increase your emissions. You can always use a higher grade as well.

Does 91 octane gas have more additives than 87 octane gas?

No it does not have any more additives. It has more octane and that is all. If your engine is designed to run on 87 octane then using 91 octane is a complete total waste of money. The higher octane fuel will provide no more power, fuel economy, or any other benefit at all. In fact your car may be harder to start with the higher octane fuel due to it's higher flash point. It is a total myth that higher octane fuel is better. It is only needed in a high compression engine to prevent pre-detonation and that is the only purpose it serves. Use exactly what is recommended by the manufacture and save your hard earned money.

Does higher octane produce higher co?

Higher octane is helpful for high compression engines. High compression causes the combustion to take place faster and can cause pinging and a loss of power. By using high octane with high compression you get the advantage of the extra efficiency of the high compression engine and the delivery of the combustion across the power stroke of the piston, with out pinging.

What is the specified fuel for manual Honda civic accord 1995 model?

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Does high octane gas increase mileage?

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What causes acceleration ping in a intrigue 3.5 liter?

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