don't use premium gas
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Originally Posted by Redline04
Anybody know or know a way we can contact a Honda engineer so we can get an expert opinion that pertains to Our cars specifically on this matter? I understand where your coming from with all you facts, but If 93 actually hurt our cars the manual would probally say Use only 87 or 89 and warn against the use of 93. If it burt up injectors they would be replacing them under warranty because there is no warning against it.
Just something to think about.
I'm not saying it adds power but I like the way my car runs with it right now. So like I said I'll stick with what has worked for me so far plus I will be running N20 eventually anyway.
Just something to think about.
I'm not saying it adds power but I like the way my car runs with it right now. So like I said I'll stick with what has worked for me so far plus I will be running N20 eventually anyway.
The only adverse affects are more valve wear and tear, burnt valves, and possibly valve failure. But again this doesn't happen overnight. It happens over thousands and thousands of miles.
however, the loss of a few horsepower is immediate.
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Originally Posted by thiscrackerntam
Not to be a d*ck man, but everything you need to know about the care and maintenance required for your vehicle is right in the owners manual. Basically it was written by the experts at honda motor co. Also another thing I'd like to point out is the owners manual actually recommends fuels with higher detergent content AND it even says that ping can occur when using the lower octane fuels so if you ask me, thats just another way of recommending premium gas without actually recommending it.
As for the ping/knock, yes they say if your car is pinging on REGULAR gas, THEN you should step up to the next higher octane.
Again, do you really think the manual has a claus in it for every thing that you SHOULDNT do to your car? Again, the manual doesn't say you shouldn't clean your internals by spraying goo-gone inside, so does that mean it's safe to do? Same thing applies for using premium gas constantly.
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From: NV
Rep Power: 813 I did feel that loss switching to higher octane. Engine was making growling sounds and just not as peppy. It was definately noticable. Went back to 89 and it feels good again.
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Originally Posted by thiscrackerntam
^^I just mentioned the cleaners because the premium tends to have more detergents.
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Originally Posted by S2000man01
It doesn't burn up injectors. I've found that was a myth after researching.
Im not like asking for an argument and i also dont beileve everything a dealer says. But could you explain why my father-in-laws POS pt cruisers injectors keep going bad 4 times while running 93. Then when he switched to 87 he hasnt had the problem. Becasue if its a myth then i dont get how in my father-in-law case this would happen the way it did.
It would be a hell of a chance to just get 4 different sets of bad injectors from the get.
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Originally Posted by gearbox
But shell v-power premium has 5x the amount of detergents as required. Regular only has 2x.
Will higher octane gasoline clean your engine better?
As a rule, high octane gasoline does not outperform regular octane in preventing engine deposits from forming, in removing them, or in cleaning your car's engine. In fact, the U.S. Environmental Protection Agency requires that all octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against the build-up of harmful levels of engine deposits during the expected life of your car.
As a rule, high octane gasoline does not outperform regular octane in preventing engine deposits from forming, in removing them, or in cleaning your car's engine. In fact, the U.S. Environmental Protection Agency requires that all octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against the build-up of harmful levels of engine deposits during the expected life of your car.
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From: NV
Rep Power: 813 Taken from the posted article about top tier.
Shell's regular and midlevel gasoline grades contain about double the amount of cleaning additives required by the EPA, and premium grades contain about five times the amount.
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Originally Posted by aznboysrfr
I've read that chevron's premium has more techron than their regular
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Originally Posted by gearbox
Taken from the posted article about top tier.
Either way, any extra cleaning that would be done is completely negated by the fact that you used high octane gas in a car made for regular.
Last edited by S2000man01; Mar 23, 2005 at 05:45 PM.
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Originally Posted by Excal
So u did find that was a myth. I didnt look into it that much (been trying to get a CS server up for 7thgen kids over in the computer&gaming forum)
Im not like asking for an argument and i also dont beileve everything a dealer says. But could you explain why my father-in-laws POS pt cruisers injectors keep going bad 4 times while running 93. Then when he switched to 87 he hasnt had the problem. Becasue if its a myth then i dont get how in my father-in-law case this would happen the way it did.
It would be a hell of a chance to just get 4 different sets of bad injectors from the get.
Im not like asking for an argument and i also dont beileve everything a dealer says. But could you explain why my father-in-laws POS pt cruisers injectors keep going bad 4 times while running 93. Then when he switched to 87 he hasnt had the problem. Becasue if its a myth then i dont get how in my father-in-law case this would happen the way it did.
It would be a hell of a chance to just get 4 different sets of bad injectors from the get.
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Originally Posted by thiscrackerntam
whatever dude. I'm gonna keep using premium. I hope thats ok with you. lol
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Rep Power: 0 I was at BP today reading the sign for their "ultimate" fuel and it said something about the benefits only for cars that require 91+ octane.
So for those putting 91-93 in their Civic's... thanks for helping keep my premium fuel fresh. Just never complain about paying too much for gas, becuase you throw away 20 cents a gallon every fillup.
So for those putting 91-93 in their Civic's... thanks for helping keep my premium fuel fresh. Just never complain about paying too much for gas, becuase you throw away 20 cents a gallon every fillup.
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damn my wife just told me 87 is over $2 now. Before I left it was $1.85. 93 was about $1.95. It's gotta be over $2.25 at least by now. At this rate no one will be able to afford to drive. That will be a very sad day for me. The world is going to hell.
damn my wife just told me 87 is over $2 now. Before I left it was $1.85. 93 was about $1.95. It's gotta be over $2.25 at least by now. At this rate no one will be able to afford to drive. That will be a very sad day for me. The world is going to hell.
Originally Posted by Redline04
Kinda off topic but not really....
damn my wife just told me 87 is over $2 now. Before I left it was $1.85. 93 was about $1.95. It's gotta be over $2.25 at least by now. At this rate no one will be able to afford to drive. That will be a very sad day for me. The world is going to hell.
damn my wife just told me 87 is over $2 now. Before I left it was $1.85. 93 was about $1.95. It's gotta be over $2.25 at least by now. At this rate no one will be able to afford to drive. That will be a very sad day for me. The world is going to hell.
Again! 
In 73 gas went to over $1.00 and everybody said the same thing. Life goes on! (my buddy in Sweden is paying like $6 for gas for his Saab) 
Well I talked to a GM engineer today. He told me this...using premium won't harm your injectors. That actual gas does nothing. The higher octane gasoline meant for higher compression motors being left unburnt, over time, will create carbon buildup on pistons, valves, springs, and at worst clog injectors. This is more common on American made cars/trucks. Higher octane gas cannot "burn out" your injectors. The cleaners cannot "burn out" your injectors. The carbon buildup is the culprit. If the vehicle is designed for 87 use 87, you may use higher octane but what for? Higher comp. motors use higher octane as well as turbo charged motors. I think I am satisfied with that answer.
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Rep Power: 401 you can burn your valves not your injectors. but again that's after thousands of miles. but yeah everything you posted i agree with completely.
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Originally Posted by Titleist71
Well I talked to a GM engineer today. He told me this...using premium won't harm your injectors. That actual gas does nothing. The higher octane gasoline meant for higher compression motors being left unburnt, over time, will create carbon buildup on pistons, valves, springs, and at worst clog injectors. This is more common on American made cars/trucks. Higher octane gas cannot "burn out" your injectors. The cleaners cannot "burn out" your injectors. The carbon buildup is the culprit. If the vehicle is designed for 87 use 87, you may use higher octane but what for? Higher comp. motors use higher octane as well as turbo charged motors. I think I am satisfied with that answer.
This has been what I have been saying, well, I’ve always said that high octane and extra cleaners just add carbon. Keep in mind only a fraction of the carbon produced actually becomes build up, the rest goes out your engine and into your cat. Over time you will collect the carbon in the cat and it will slowly clog, not to mention you may feel a small power loss from the increase in back pressure as the carbon builds in the cat. Or should I say, you won’t feel the power loss because it happens so slowly over time, so I don't want to hear any more about my car feel just as strong as it did when it was new, unless you have dynos or time slips to back it up.
This is also what the Engineer at Honda said (he's the one that works on suspension parts though, but he still knows far more than any of us about cars). He is going to ask an engineer that specifically worked on designing the D17 motor, but I have a feeling it will be exactly what you said, carbon build up is the enemy.
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Originally Posted by Jrfish007
This has been what I have been saying, well, I’ve always said that high octane and extra cleaners just add carbon. Keep in mind only a fraction of the carbon produced actually becomes build up, the rest goes out your engine and into your cat. Over time you will collect the carbon in the cat and it will slowly clog, not to mention you may feel a small power loss from the increase in back pressure as the carbon builds in the cat. Or should I say, you won’t feel the power loss because it happens so slowly over time, so I don't want to hear any more about my car feel just as strong as it did when it was new, unless you have dynos or time slips to back it up.
This is also what the Engineer at Honda said (he's the one that works on suspension parts though, but he still knows far more than any of us about cars). He is going to ask an engineer that specifically worked on designing the D17 motor, but I have a feeling it will be exactly what you said, carbon build up is the enemy.
This is also what the Engineer at Honda said (he's the one that works on suspension parts though, but he still knows far more than any of us about cars). He is going to ask an engineer that specifically worked on designing the D17 motor, but I have a feeling it will be exactly what you said, carbon build up is the enemy.
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Originally Posted by Redline04
Well that sounds believable. I don't have a cat, but there is a bit of carbon built up on the bottom half of my exhaust tip. I plan to run N20 in the near future and since the buildup within the engine itself takes a while I'll stick to 93. Thanks for clearing things up and seeking expert opinions on the matter.
Thanks to Titleist71 too for finding expert opinions and S2000man01 for starting this. I can reference other to this thread when they ask the same question, in about a week.
