hey i was just wondering if its actually worth spending the extra money to get supreme or whatever instead of just regular. especially now since by me reg is like 3.99 and supreme is like 4.25
regular vs. supreme
- Thread starter IEnjoiSkating
- Start date
thanks lol
regular for my single cam. ill fill it up w 93 before i do an oil change. thats it.
When I had my Civics, I put in the cheapest 87 I could find. Never any worries.
premium and regular have the same additives. premium has higher octane for higher compression engines (aka high performance engines) to prevent detonation in the cylinder before TDC. thus it is completely useless in a regular vehicle
in fact, Tuner Performance Reports magazine proved that a typical engine will lose power when using premium fuel with dyno backed results
in fact, Tuner Performance Reports magazine proved that a typical engine will lose power when using premium fuel with dyno backed results
i have to put 91 in. i live in california. it sucks.
why??
arent you suppose to put supreme in if you have any vtec engine?
not necessarily, a SOHC VTEC does not require premium
From the manual.
Code:
[B]Civic Coupe: 1997 Owner's Manual[/B]
[B]Gasoline[/B]
Your Honda is designed to operate on unleaded gasoline with a pump octane of
86 or higher. Use of a lower octane gasoline can cause a persistent, heavy
metallic rapping noise that can lead to mechanical damage.
We recommend gasolines containing detergent additives that help prevent fuel
system and engine deposits.
Using gasoline containing lead will damage your car's emission controls.
This contributes to air pollution.
In Canada, some gasolines contain an octane-enhancing additive called MMT.
If you use such gasolines, your emission control system performance may
deteriorate and the Malfunction Indicator Lamp on your instrument panel
may turn on. If this happens, contact your authorized Honda dealer for
service.
[B][I]Oxygenated Fuels[/I][/B]
Some conventional gasolines are being blended with alcohol or an ether
compound. These gasolines are collectively referred to as oxygenated
fuels. To meet clean air standards, some areas of the United States and
Canada use oxygenated fuels to help reduce emissions.
If you use an oxygenated fuel, be sure it is unleaded and meets the
minimum octane rating requirement.
Before using an oxygenated fuel, try to confirm the fuel's contents.
Some states/provinces require this information to be posted on the pump.
The following are the EPA-approved percentages of oxygenates:
[B]ETHANOL[/B] (ethyl or grain alcohol)
You may use gasoline containing up to 10 percent ethanol by volume.
Gasoline containing ethanol may be marketed under the name "Gasohol."
[B]MTBE[/B] (Methyl Tertiary Butyl Ether)
You may use gasoline containing up to 15 percent MTBE by volume.
[B]METHANOL[/B] (methyl or wood alcohol)
You may use gasoline containing up to 5 percent methanol by volume as
long as it also contains cosolvents and corrosion inhibitors to protect the
fuel system. Gasoline containing more than 5 percent methanol by volume
may cause starting and/or performance problems. It may also damage metal,
rubber and plastic parts of your fuel system.
If you notice any undesirable operating symptoms, try another service station
or switch to another brand of gasoline.
Fuel system damage or performance problems resulting from the use of an
oxygenated fuel containing more than the percentages of oxygenates given
above are not covered under warranty.
[B][I]Driving in Foreign Countries[/I][/B]
If you are planning to take your Honda outside the U.S. or Canada, contact
the tourist bureaus in the areas you will be traveling in to find out about
the availability of an unleaded gasoline with the proper octane rating.
If unleaded gasoline is not available, be aware that using leaded gasoline in
your Honda will affect performance and fuel mileage, and damage its emissions
controls. It will no longer comply with U.S. and Canadian emissions
regulations, and will be illegal to operate in North America. To bring your
car back into compliance will require the replacement of several components,
such as the oxygen sensors and the three way catalytic converter. These
replacements are not covered under warranty.
...<<<<10.0:1 compression ratio. 87 octane is recommended by the manufacturer .Mugenkid18 said:
i was close. a 10.2:1 motor requires 91 i know
my old b16 didnt even like a mix of 89 and 93
the manual that came with my B16 suggested not to use lower than 93 RON, thats the lowest i've seen UK pumps sell it at anyway so no biggie.