Honda Civic Fuel, Oil, Cleaners & Other MaintenanceExtending the life of your Honda Civic requires the proper fuel, oil, and cleaners, along with other regularly scheduled maintenance. Keep your Honda Civic fuel and oil at the right levels to keep your Civic on the road longer.
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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.
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.
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.
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.
__________________ 2005 PSM WRX STi
334 AWhp/ 394Wtq
Snow Performance Meth Injection
38mm Tial EWG
Gutted cats, Invidia/ApexiN1 TBE
Some CF and Shop Stiks hehe
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.
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.
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.
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.
With N2O, you should certainly use a higher octane. I won't get into the chemistry of this, but the unstable nature of N2O can cause knocking and when you use the bottle the knocking gets becomes magnified because of the faster burn rate of N2O and gas.
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.
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) 
Civic minded old man/ low-loud-loven it!
