i am just curious because i use my 92 lude for a daily driver and the gas prices are really high. Is there some reason that i would have to use premium or can i use the midgrade?

 

The car was designed to run Premium. Course if you do run a lower grade and the engine starts to knock the ECU should retard the timing automatically.

Its not the best idea, and I wouldnt do it all the time, but a tank here and there wont hurt.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HONDA-2NR &raquo;</TD></TR><TR><TD CLASS="quote">i am just curious because i use my 92 lude for a daily driver and the gas prices are really high. Is there some reason that i would have to use premium or can i use the midgrade?</TD></TR></TABLE>

Man I always here people in america complaining about fuel costs, we have to pay 89 pence a litre of 98RON premium here, thats aorund $1.65 there; How much do you guys pay there for a gallon?

 

like 1.20 in GA

 

1.82 a gallon for premium here. in IL

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h22a4_dc2 &raquo;</TD></TR><TR><TD CLASS="quote">1.82 a gallon for premium here. in IL</TD></TR></TABLE>

what xxRON octane rating is that?

 

im not sure wat xxRON is but its 93 octane from shell

 

In the US, we do a different method of figuring out the octane ratings. But UK octane rating is about 4 points higher than US octane rating... so it would translate to us using 97RON

 

i think the government is having a conspricacy with the iraqi problem as a way to make use pay more for gas. GO HOWARD DEAN!

 

"YEAHHHHHHHHHHHHHHHHH!!!!!!!"

 

i wish i had the pic with me, but i have a pic of gas prices in poland. 1.10 euros a liter. thats almost $5 a gallon.

gas prices here arent bad.


Modified by shakes at 1:45 PM 2/1/2004

 

we dont have 93 anywhere around here and we only have 92 at BPs. Its around 1.70/gal in KS and around 1.55/gal in MO, for premium.

T

 

can make some for ya and we have issues with gas quality also

 

You guys are lucky for paying those prices. Here in the Bay Area, we only get to 91 octance and it costs me $2.05/gallon.

 

Each piston-type gasoline engine has some minimum octane requirement, below which it will ping. Ping and octane requirement are a function of engine design, manufacturing tolerances, engine condition, specific engine part malfunctions, and certain engine adjustments.

So pay 10 cents more per gallon or buy a new motor if something drastically happens when under load.

It's your choice.

 

If you have an F22a you can run 87 all day.

RON = Research Octane number (Higher)
MON = Mechanical Octane Number (Lower)

North America uses the (R+M)/2 method to get the average of the 2 numbers. So RON only will be higher than R+M/2

 

i wouldn't go lower than 91 octane at all.
there has been a couple of times when i accidently
put 87 in so i threw some octane booster and filled
it the rest of the way with premium

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote">Each piston-type gasoline engine has some minimum octane requirement, below which it will ping. Ping and octane requirement are a function of engine design, manufacturing tolerances, engine condition, specific engine part malfunctions, and certain engine adjustments.

So pay 10 cents more per gallon or buy a new motor if something drastically happens when under load.

It's your choice.</TD></TR></TABLE>


Its the price to pay for a high compression engine isnt it!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kxkal &raquo;</TD></TR><TR><TD CLASS="quote">In the US, we do a different method of figuring out the octane ratings. But UK octane rating is about 4 points higher than US octane rating... so it would translate to us using 97RON</TD></TR></TABLE>

RON as satan-srv stated is Research Octane number.

This is the measurment for Octane that is used all across the world as a international standard.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">If you have an F22a you can run 87 all day.

RON = Research Octane number (Higher)
MON = Mechanical Octane Number (Lower)

North America uses the (R+M)/2 method to get the average of the 2 numbers. So RON only will be higher than R+M/2 </TD></TR></TABLE>


Joel, where did you get this information from?

 

If you go to any of the big commercial gas stations it should have a little note on the pump like a sticker or an insert behind the plastic screen saying the octane rating measured in RON (BP and Shell do this all across Europe so i presume its the same elswhere)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 916LuDeR &raquo;</TD></TR><TR><TD CLASS="quote">You guys are lucky for paying those prices. Here in the Bay Area, we only get to 91 octance and it costs me $2.05/gallon. </TD></TR></TABLE>

our standard fuel is 94-95RON, That cost £0.73p so thats like $1.20 at the mo.
But that is pricey for standard fuel!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shakes &raquo;</TD></TR><TR><TD CLASS="quote">i wish i had the pic with me, but i have a pic of gas prices in poland. 1.10 euros a liter. thats almost $5 a gallon.

gas prices here arent bad.


Modified by shakes at 1:45 PM 2/1/2004</TD></TR></TABLE>


Thats cheaper than here either way! damn it man we should have at least got cheaper gas prices from this big war; I expect they're just getting better profits instead!

hey waht was the picture then, some guy's jaw hitting the floor when he realises he cant fill his motor to get home or somthing? or was it just the prices

 

Well it's Motor octane, I just call it mechanical out of habit, anyways to give you more info I did a quick google search and found this

http://www.seansa4page.com/resource/octane.html

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
6.4 Why are two ratings used to obtain the pump rating?
The correct name for the (RON+MON)/2 formula is the "antiknock index", and it remains the most important quality criteria for motorists [39].

The initial knock measurement methods developed in the 1920s resulted in a diverse range of engine test methods and conditions, many of which have been summarised by Campbell and Boyd [103]. In 1928 the Co-operative Fuel Research Committee formed a sub-committee to develop a uniform knock-testing apparatus and procedure. They settled on a single-cylinder, valve-in-head, water-cooled, variable compression engine of 3.5"bore and 4.5" stroke. The knock indicator was the bouncing-pin type. They selected operating conditions for evaluation that most closely match the current Research Method, however correlation trials with road octanes in the early 1930s exhibited such large discrepancies that conditions were changed ( higher engine speed, hot mixture temperature, and defined spark advance profiles ), and a new tentative ASTM Octane rating method was produced. This method is similar to the operating conditions of the current Motor Octane procedure [12,103]. Over several decades, a large number of alternative octane test methods appeared. These were variations to either the engine design, or the specified operating conditions [103]. During the 1950-1960s attempts were made to internationally standardise and reduce the number of Octane Rating test procedures.

During the late 1940s - mid 1960s, the Research method became the important rating because it more closely represented the octane requirements of the motorist using the fuels/vehicles/roads then available. In the late 1960s German automakers discovered their engines were destroying themselves on long Autobahn runs, even though the Research Octane was within specification. They discovered that either the MON or the Sensitivity ( the numerical difference between the RON and MON numbers ) also had to be specified. Today it is accepted that no one octane rating covers all use. In fact, during 1994, there have been increasing concerns in Europe about the high Sensitivity of some commercially-available unleaded fuels.

The design of the engine and vehicle significantly affect the fuel octane requirement for both RON and MON. In the 1930s, most vehicles would have been sensitive to the Research Octane of the fuel, almost regardless of the Motor Octane, whereas most 1990s engines have a 'severity" of one, which means the engine is unlikely to knock if a changes of one RON is matched by an equal and opposite change of MON [32]. I should note that the Research method was only formally approved in 1947, but used unofficially from 1942.

6.5 What does the Motor Octane rating measure?
The conditions of the Motor method represent severe, sustained high speed, high load driving. For most hydrocarbon fuels, including those with either lead or oxygenates, the motor octane number (MON) will be lower than the research octane number (RON).


Test Engine conditions Motor Octane
Test Method ASTM D2700-92 [104]
Engine Cooperative Fuels Research ( CFR )
Engine RPM 900 RPM
Intake air temperature 38 C
Intake air humidity 3.56 - 7.12 g H2O / kg dry air
Intake mixture temperature 149 C
Coolant temperature 100 C
Oil Temperature 57 C
Ignition Advance - variable Varies with compression ratio
( eg 14 - 26 degrees BTDC )
Carburettor Venturi 14.3 mm

6.6 What does the Research Octane rating measure?
The Research method settings represent typical mild driving, without consistent heavy loads on the engine.


Test Engine conditions Research Octane
Test Method ASTM D2699-92 [105]
Engine Cooperative Fuels Research ( CFR )
Engine RPM 600 RPM
Intake air temperature Varies with barometric pressure
( eg 88kPa = 19.4C, 101.6kPa = 52.2C )

Intake air humidity 3.56 - 7.12 g H2O / kg dry air
Intake mixture temperature Not specified
Coolant temperature 100 C
Oil Temperature 57 C
Ignition Advance - fixed 13 degrees BTDC
Carburettor Venturi Set according to engine altitude
( eg 0-500m=14.3mm, 500-1000m=15.1mm )

6.7 Why is the difference called "sensitivity"?
RON - MON = Sensitivity. Because the two test methods use different test conditions, especially the intake mixture temperatures and engine speeds, then a fuel that is sensitive to changes in operating conditions will have a larger difference between the two rating methods. Modern fuels typically have sensitivities around 10. The US 87 (RON+MON)/2 unleaded gasoline is recommended to have a 82+ MON, thus preventing very high sensitivity fuels [39]. Recent changes in European gasolines has caused concern, as high sensitivity unleaded fuels have been found that fail to meet the 85 MON requirement of the EN228 European gasoline specification [106].

</TD></TR></TABLE>

And most NA pumps will say(R+M)/2 right on them beside the octane figure...

 

If you can't afford to put premium in your car it is time to buy a civic. I'm in college and even I can afford the $1.80/gal here in AR.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">If you have an F22a you can run 87 all day. </TD></TR></TABLE>

Just another benefit of having an f22 .... yeah i know im in denial i need an h22. With all the money im saving on gas i should have enough saved up for one in no time though.

 

i've ran 89 octane in my car since '99. no problems. i'll fill up with 93 if i'm running n2o.