87 octane sucks.. use 90 or better...
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Prowlin' with a Purpose
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87 octane sucks.. use 90 or better...
so use 90 octane or better... im gonna try to figure out what fuel treatment will clean that stuff out...
oh.. for those who dont know, that is carbon buildup from the craptacular gas...
that is what it looked like after about 63k miles
i use that some times and it is great way better than 87!!!!!!!!!!!!!!! but sometimes seems like the gas burn faster. 
RESIDENT ROTOR HEAD
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Rep Power: 328 Honestly, higher octane will likely make it worse. Higher octane fuel has a higher resistance to combustion, in order to prevent knocking and detonation on highe compression/FI cars. You'll get a whole lot more carbon build up with a higher rating than what you need.
Just get a rotary
Just get a rotary
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Originally Posted by nookiemonster
Honestly, higher octane will likely make it worse. Higher octane fuel has a higher resistance to combustion, in order to prevent knocking and detonation on highe compression/FI cars. You'll get a whole lot more carbon build up with a higher rating than what you need.
Just get a rotary
Just get a rotary
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Originally Posted by nookiemonster
Just get a rotary
Maybe running rich or something?
Originally Posted by typeRDreamer
Then what makes the higher octane better? why is it a "higher grade"
Last edited by dre2600; Mar 4, 2005 at 12:23 AM.
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Rep Power: 328 ^^^Exactly...
Put it like this...there are two things that can cause an explosion with a chemical like gasoline. One being a spark, which is the most controlled way, and the other being through sheer compression/force (the way large diesel trucks ignite their fuel). When you are running large compression numbers, naturally, the fuel will try to combust, and this can be bad, especially if the piston is still on it's way back up to top dead center. When this happens it causes a disturbance in the natural reciprocating motion of the piston, and the piston essentially slaps around inside the cylinder. This is what you hear when your engine knocks or pings. In extreme cases, you can throw a rod. This is why tuning and premium octane is key in FI or high compression applications.
Your civic however, will see no benefit from this fuel. It is not "cleaner" than regular, it is only a slower burning type of fuel. You'd be wasting your money. If you're that concerned, look into some of the fuel additives that will help clean engine parts. From what I understand Chevron "with techron" helps alot...carbon build up is just the nature of the beast I'm afraid.
Put it like this...there are two things that can cause an explosion with a chemical like gasoline. One being a spark, which is the most controlled way, and the other being through sheer compression/force (the way large diesel trucks ignite their fuel). When you are running large compression numbers, naturally, the fuel will try to combust, and this can be bad, especially if the piston is still on it's way back up to top dead center. When this happens it causes a disturbance in the natural reciprocating motion of the piston, and the piston essentially slaps around inside the cylinder. This is what you hear when your engine knocks or pings. In extreme cases, you can throw a rod. This is why tuning and premium octane is key in FI or high compression applications.
Your civic however, will see no benefit from this fuel. It is not "cleaner" than regular, it is only a slower burning type of fuel. You'd be wasting your money. If you're that concerned, look into some of the fuel additives that will help clean engine parts. From what I understand Chevron "with techron" helps alot...carbon build up is just the nature of the beast I'm afraid.
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Rep Power: 339 well higher octane burns cleaner and less carbon build up than the 87 cause it burns more stoich... altho i could probablly blame this **** on the ethanol that they add in the gas so it dont freeze
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Originally Posted by nookiemonster
^^^I haven't heard this, but I have heard that higher octane burns at a lower temperature than lower octane fuel.
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Rep Power: 0 What do different octanes mean?
Different gasolines are rated on their ability to resist knocking. The actual octane number is a measurement that gauges the gasoline's ability to resist knocking. Higher octane levels indicate anti-knock potential. In most cases, light pinging or knocking will not cause power loss or severe harm to vehicles. However, heavy or prolonged knocking may cause engine damage and should be checked by an automobile mechanic.
Do premium grades of gasoline really keep your car performing better?
Your vehicle should perform at its best when the appropriate level of octane is being used for the engine in which it is being combusted. There is no benefit to using gasoline of a higher octane than the engine requires to perform knock-free.
Different gasolines are rated on their ability to resist knocking. The actual octane number is a measurement that gauges the gasoline's ability to resist knocking. Higher octane levels indicate anti-knock potential. In most cases, light pinging or knocking will not cause power loss or severe harm to vehicles. However, heavy or prolonged knocking may cause engine damage and should be checked by an automobile mechanic.
Do premium grades of gasoline really keep your car performing better?
Your vehicle should perform at its best when the appropriate level of octane is being used for the engine in which it is being combusted. There is no benefit to using gasoline of a higher octane than the engine requires to perform knock-free.
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Originally Posted by Boggie1688
What do different octanes mean?
Different gasolines are rated on their ability to resist knocking. The actual octane number is a measurement that gauges the gasoline's ability to resist knocking. Higher octane levels indicate anti-knock potential. In most cases, light pinging or knocking will not cause power loss or severe harm to vehicles. However, heavy or prolonged knocking may cause engine damage and should be checked by an automobile mechanic.
Do premium grades of gasoline really keep your car performing better?
Your vehicle should perform at its best when the appropriate level of octane is being used for the engine in which it is being combusted. There is no benefit to using gasoline of a higher octane than the engine requires to perform knock-free.
Different gasolines are rated on their ability to resist knocking. The actual octane number is a measurement that gauges the gasoline's ability to resist knocking. Higher octane levels indicate anti-knock potential. In most cases, light pinging or knocking will not cause power loss or severe harm to vehicles. However, heavy or prolonged knocking may cause engine damage and should be checked by an automobile mechanic.
Do premium grades of gasoline really keep your car performing better?
Your vehicle should perform at its best when the appropriate level of octane is being used for the engine in which it is being combusted. There is no benefit to using gasoline of a higher octane than the engine requires to perform knock-free.
he's right. The manual even saids use 87.
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Rep Power: 311 My understanding is that higher octane fuel has more oil in it, which causes more carbon build up. I've heard that if you run higher octane fuel, over time it can burn out your cat converter since the unspent fuel collects in the converter and basically sits there and burns.
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Originally Posted by WannaBFast
yes, because it burns at a lower temp, it allows for all the excess fuel to exit the cylinder... as opposed to caking onto the piston...
All gas sold burns in the correct stoichiometric proportions for the engine it is designed to run in. If Honda sold an engine designed for 87 octane and everyone who put in 87 octane got fouled pistons I don't think they'd last very long as a car manufacturing company. Also, if a gas company sold gas that didn't burn properly (as gas refineries, etc. are subject to government regulation) they wouldn't last very long either.
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Rep Power: 339 well most gas stations in my area have oxygenated gas, basically its gas with ethanol
the oxygenated fuel doesnt burn as clean, and almost always makes the car run rich
the oxygenated fuel doesnt burn as clean, and almost always makes the car run rich
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Rep Power: 0 From my understanding you should do a gas treatment atleast once a month run a high octane to clean everything out. But u should run higher octane then 87 all the time. It will burn the *h*t out of your injectors and then you gonna have to replace those.
I know its not even comparing our cars to a pt cruiser...but my father in law bought a brand new pt cruiser and ran 93 in it all the time. After 3 months of having the car it burnt the injectors up and the stupid dealer nor my father in law knew why it was doing it until the 4th time it happened and he told me about it and i asked him what kind of gas he was putting in there. He told that to the dealer and they said that was why they was burning up. Hes been running 87 ever since and havent had a problem.
But I know running high octane all the time isnt good for fuel injected cars. Throw some gas cleaner in there ever so often and maybe a tank of 93 ever so often will clean everything out well. No need to run anything higher than 87 all the time.
I know its not even comparing our cars to a pt cruiser...but my father in law bought a brand new pt cruiser and ran 93 in it all the time. After 3 months of having the car it burnt the injectors up and the stupid dealer nor my father in law knew why it was doing it until the 4th time it happened and he told me about it and i asked him what kind of gas he was putting in there. He told that to the dealer and they said that was why they was burning up. Hes been running 87 ever since and havent had a problem.
But I know running high octane all the time isnt good for fuel injected cars. Throw some gas cleaner in there ever so often and maybe a tank of 93 ever so often will clean everything out well. No need to run anything higher than 87 all the time.
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Rep Power: 0 Use the recommended octane... nothing higher.
If you are worried about buildup and fuel quality, use this:
http://www.lubecontrol.com/fuel.htm
Its a fuel treatment that actually will help you car.
If you are worried about buildup and fuel quality, use this:
http://www.lubecontrol.com/fuel.htm
Its a fuel treatment that actually will help you car.
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well most gas stations in my area have oxygenated gas, basically its gas with ethanol
the oxygenated fuel doesnt burn as clean, and almost always makes the car run rich
the oxygenated fuel doesnt burn as clean, and almost always makes the car run rich
Oxygenated fuel is gasoline blended with oxygenates like ethanol and MTBE (Methyl Tertiary Butyl Ether). What that means is that the gas contains more oxygen so it burns cleaner, significantly reducing auto-exhaust emissions, particularly carbon monoxide and hydrocarbons in older-model vehicles. Newer-model vehicles have sophisticated engine-control systems that minimize the benefit of having more oxygen in gasoline. In addition, refiners can make other changes to the composition of gasoline that achieve similar emission reductions without the use of oxygenates. Currently, federal regulations require oil companies to produce and sell oxygenated fuel year-round in many major cities in the U.S. State regulations also require oxygenated fuel in the winter for cities that have carbon-monoxide problems.
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Rep Power: 381 How many times must we go through all this....?
Octane rateings are all about compression resistance. The higher the Octane the higher that gas's resistance to spontaniously combust under preasure. Thats it. it doesnt have "More energy" it doesnt burn Cleaner, it isnt even a better gas (Gasoline companys are REQUIRED to put the same detergents in all of their grades of gas). So go ahead, Buy your 91 Octane... wase your money. I'll be putting around on 87... Saving for more Race tires.
Octane rateings are all about compression resistance. The higher the Octane the higher that gas's resistance to spontaniously combust under preasure. Thats it. it doesnt have "More energy" it doesnt burn Cleaner, it isnt even a better gas (Gasoline companys are REQUIRED to put the same detergents in all of their grades of gas). So go ahead, Buy your 91 Octane... wase your money. I'll be putting around on 87... Saving for more Race tires.
Originally Posted by Zzyzx
How many times must we go through all this....?
Octane rateings are all about compression resistance. The higher the Octane the higher that gas's resistance to spontaniously combust under preasure. Thats it. it doesnt have "More energy" it doesnt burn Cleaner, it isnt even a better gas (Gasoline companys are REQUIRED to put the same detergents in all of their grades of gas). So go ahead, Buy your 91 Octane... wase your money. I'll be putting around on 87... Saving for more Race tires.
Octane rateings are all about compression resistance. The higher the Octane the higher that gas's resistance to spontaniously combust under preasure. Thats it. it doesnt have "More energy" it doesnt burn Cleaner, it isnt even a better gas (Gasoline companys are REQUIRED to put the same detergents in all of their grades of gas). So go ahead, Buy your 91 Octane... wase your money. I'll be putting around on 87... Saving for more Race tires.
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Rep Power: 381 Note that in Every single last one of these links Regarding OCTANE ratings, the only thing that is compaired is the Anti-Knock Index...
http://www.eia.doe.gov/oil_gas/petro...ne_grades.html
http://chemistry.about.com/library/w...abyb100401.htm
http://www.petro-canada.ca/eng/prodserv/fuels/6823.htm
http://www.citgo.com/Products/FuelGa...lineGrades.jsp
http://www.everything2.com/index.pl?node=gasoline
http://www.ftc.gov/bcp/conline/pubs/autos/octane.htm
http://www.smu.edu/newsinfo/releases/99267.html
http://www.eia.doe.gov/oil_gas/petro...ne_grades.html
http://chemistry.about.com/library/w...abyb100401.htm
http://www.petro-canada.ca/eng/prodserv/fuels/6823.htm
http://www.citgo.com/Products/FuelGa...lineGrades.jsp
http://www.everything2.com/index.pl?node=gasoline
http://www.ftc.gov/bcp/conline/pubs/autos/octane.htm
http://www.smu.edu/newsinfo/releases/99267.html
Originally Posted by Civic_RedLine
how much could you possible save? 20 ce nts per gallon? wow, that means you get to save a buck or two per fill-up. whatever you guys say, no one has convinced me to go back to 87...I still think I get a better burn rate with my 91... I cant do 87.. 87 is just for n/a cars.
WOW, then YOUR the biggest dumbass on this site
