ok i feel dumb asking this but if you put premium in a stock car it doesnt make any difference right? somebody told me they tried putting higher octane fuel in their stock civic and they got better gas mileage. would higher octane fuel benefit a stock engine at all? i mean if u think about it its only about $3 extra to put premium in vs the basic stuff.
fuel octane
- Thread starter Coutts
- Start date
first off. this is the wrong section to be putting this in. just a warning. as for putting 93 in your car no it wont make a difference. some people will tell you it does but just no. only thing that it will do depending on the type of gas you use is it will clean you fuel system. i use Shell V-power like every 10-12 fill ups to keep my fuel system cleaned and i would recommend it to all.
Shell v power is premium. They just gave it a different name so people would get all excited and think it will make their car faster. It's the same stuff as all the other premium gases pretty much.
yes there are like 7 additives in the v-power and in most other's only 3 additive. and those extra additive in the V-power are what clean you fuel system. but like i said dont run it all the time unless your car only takes premium. only use it every 12 fill-ups. and no your tank doesnt have to be empty you can put it in with a quater tank. i filled when i was at half.Lordofdark176 said:
Been running BP Ultra 93 Octane since I brought my car at 93k. My car is at 123k haven't had a problem yet and yes I can tell the difference in my MPG. I did a test my self and I do get a little more gas mileage out of my car when I use BP 93. So do you.
ryanM
New Member
your car will run just as good, if not better on 87 octane. your wasting your money and actually HURTING your car by running high octane fuel. eventually your catalytic converter will be junk because of it. and whoopdy doo you drove 30k miles with no problems, you drive a honda, get used to it...i drove my civic that long without oil in it and still had no problems...Kumo said:
man... my dad has been running 91 on his 93 f22 accord forever, it runs great. he wont ever put anything but 91(the highest in cali) i try to tell him he doesn't needit and but he's a stubborn fool. he never had cat problems either or engine problems and has 140K on the odometer. but i do think it's a waste of money, especially now that prices are ridiciously high.
i run 89 in my o4 ex all the time, just to be safe, i plan on keep this for as long as i can so. yeah. 87 feels slightly laggy..
i run 89 in my o4 ex all the time, just to be safe, i plan on keep this for as long as i can so. yeah. 87 feels slightly laggy..
ryanM
New Member
the octane rating of fuel is a rating of how flamable it is, higher octane fuel is LESS flamable than lower octane fuel. your civic doesnt have high enough compression to efficiently burn 93 octane fuel. IE. it doesnt burn all of it, so no, your NOT getting as good of fuel economy. that unburned gas is being expelled with your exhaust and builds up in your catalytic converter which will eventually fail as a result...Kumo said:
So why in the owners manual it says use an octane rating of 86 or higher. Then it goes on to say that they recommend gasoline with additives in it. Also with proof I meant have you seen this happen. Also I thought that honda does something were they recycle the extra gas that is not being used the first time around ?
Exhaust gas recirculation is used to lower combustion chamber temperature in order to prevent formation of oxides of nitrogen (NOx) . Not to recycle unburned hydrocarbons.Kumo said:
Honda used to have an engine that ran 18:1 A/F ratio though. The CVCC. (Compound Vortex Controlled Combustion) They even made a variant of the Chevrolet 350 V8 with CVCC heads that ran cleaner without a catalyst than Chevrolet's own 350 with a catalytic converter.
Saab had a unburned hydrocarbon recycling system. Kinda' clever but kinda' stupid. Basically, before the catalyst lit off, all exhaust would be routed into the trunk into a special polymer bag. Once the catalyst was at operating temperature, the exaust would be re-routed back through again and all the unburned hydrocarbons would get taken care of .
Back on topic:
If, you are using a Top Tier detergent gasoline, you are not getting any more cleaning additives in Premium than you do in Regular.
If you are using Premium and you are not A) Boosted, B) DOHC vtec, or C) built N/A with high compression then you are just throwing money away to run slower when you put premium in your D-series on stock internals.
List of Top Tier Gasolines
QuikTrip
Chevron
Conoco
Phillips
76
Shell
Entec Stations
MFA Oil Company
Kwik Trip/Kwik Star
The Somerset Refinery, Inc.
Chevron-Canada
Aloha Petroleum
Tri-Par Oil Company
Shell-Canada
Texaco
Petro-Canada
Sunoco-Canada
QuikTrip
Chevron
Conoco
Phillips
76
Shell
Entec Stations
MFA Oil Company
Kwik Trip/Kwik Star
The Somerset Refinery, Inc.
Chevron-Canada
Aloha Petroleum
Tri-Par Oil Company
Shell-Canada
Texaco
Petro-Canada
Sunoco-Canada
Thanx I couldn't remember what it was exactly the system did. I just recently read a little about it. But thank you for clear the situation up.Beelzebubba said:Exhaust gas recirculation is used to lower combustion chamber temperature in order to prevent formation of oxides of nitrogen (NOx) . Not to recycle unburned hydrocarbons.
Honda used to have an engine that ran 18:1 A/F ratio though. The CVCC. (Compound Vortex Controlled Combustion) They even made a variant of the Chevrolet 350 V8 with CVCC heads that ran cleaner without a catalyst than Chevrolet's own 350 with a catalytic converter.
Saab had a unburned hydrocarbon recycling system. Kinda' clever but kinda' stupid. Basically, before the catalyst lit off, all exhaust would be routed into the trunk into a special polymer bag. Once the catalyst was at operating temperature, the exaust would be re-routed back through again and all the unburned hydrocarbons would get taken care of .
Back on topic:
If, you are using a Top Tier detergent gasoline, you are not getting any more cleaning additives in Premium than you do in Regular.
If you are using Premium and you are not A) Boosted, B) DOHC vtec, or C) built N/A with high compression then you are just throwing money away to run slower when you put premium in your D-series on stock internals.
best answer i have read so far. and he is right all.LongGrain said: