wha gas do you use in your cl?
09-29-2003, 05:51 PM
#41
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Originally posted by Got Rice?
Hummm...Maybe thats why I'm running so damned rich. I puff out black smoke sometimes when I get on it.
Hummm...Maybe thats why I'm running so damned rich. I puff out black smoke sometimes when I get on it.
09-29-2003, 05:59 PM
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i cant believe people cant search this...
its been beaten to death on here in the few months ive been here
listen to the old timers
and search 87 is the way to go.
its been beaten to death on here in the few months ive been here
listen to the old timers
and search 87 is the way to go.
09-29-2003, 06:07 PM
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Originally posted by Hobo
i cant believe people cant search this...
its been beaten to death on here in the few months ive been here
listen to the old timers
and search 87 is the way to go.
i cant believe people cant search this...
its been beaten to death on here in the few months ive been here
listen to the old timers
and search 87 is the way to go.
Then why, if 87 is all we need, do they sell 2 & 3 grades higher than 87?
I, personally, can tell the difference in my vehicles when I get a shitty tank of 87 octane. My old max would run like shit with 87...than after a few tanks of 94...ran liked a raped ape.
09-29-2003, 06:09 PM
#46
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Originally posted by chris3240929
Question.
Then why, if 87 is all we need, do they sell 2 & 3 grades higher than 87?
I, personally, can tell the difference in my vehicles when I get a shitty tank of 87 octane. My old max would run like shit with 87...than after a few tanks of 94...ran liked a raped ape.
Question.
Then why, if 87 is all we need, do they sell 2 & 3 grades higher than 87?
I, personally, can tell the difference in my vehicles when I get a shitty tank of 87 octane. My old max would run like shit with 87...than after a few tanks of 94...ran liked a raped ape.
09-29-2003, 06:19 PM
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Originally posted by Got Rice?
Cause they don't sell gas according to what runs best on a CL.
Cause they don't sell gas according to what runs best on a CL.
I would think the big shitty ass v-8's would need the lower octane...
I'm stickin with the 94 Sunoco...fuck it...
When I start to see black smoke, I'll switch to Kerosene...
09-29-2003, 06:20 PM
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Originally posted by chris3240929
But a CL is pretty efficient right?
I would think the big shitty ass v-8's would need the lower octane...
I'm stickin with the 94 Sunoco...fuck it...
When I start to see black smoke, I'll switch to Kerosene...
But a CL is pretty efficient right?
I would think the big shitty ass v-8's would need the lower octane...
I'm stickin with the 94 Sunoco...fuck it...
When I start to see black smoke, I'll switch to Kerosene...
Higher octane = able to raise to higher boost.
09-29-2003, 06:44 PM
#50
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Originally posted by chris3240929
Question.
Then why, if 87 is all we need, do they sell 2 & 3 grades higher than 87?
I, personally, can tell the difference in my vehicles when I get a shitty tank of 87 octane. My old max would run like shit with 87...than after a few tanks of 94...ran liked a raped ape.
Question.
Then why, if 87 is all we need, do they sell 2 & 3 grades higher than 87?
I, personally, can tell the difference in my vehicles when I get a shitty tank of 87 octane. My old max would run like shit with 87...than after a few tanks of 94...ran liked a raped ape.
because it all depends on the car. For example the type S needs a higher octane because it's a high compression engine. My parents navigator is the same way. But the majority of cars don't need it, for example our economy CL. It's built to get good gas mileage and not the powerfull motor the Type S is built up to be.
Also as got rice stated, FI cars almost always need high octane. ANy thing lower (same w/ high CR motors) would detonate on a low octane.
09-29-2003, 06:45 PM
#51
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Originally posted by chris3240929
But a CL is pretty efficient right?
I would think the big shitty ass v-8's would need the lower octane...
I'm stickin with the 94 Sunoco...fuck it...
When I start to see black smoke, I'll switch to Kerosene...
But a CL is pretty efficient right?
I would think the big shitty ass v-8's would need the lower octane...
I'm stickin with the 94 Sunoco...fuck it...
When I start to see black smoke, I'll switch to Kerosene...
some v8's run low octane, some don't, basically the CR is what will tell you you need higher octane.
Hey, go w/ your feeling, don't listen to the dyno or the facts
09-30-2003, 05:42 AM
#56
4-8-15-16-23-42
Originally posted by CLpower
because it all depends on the car. For example the type S needs a higher octane because it's a high compression engine. My parents navigator is the same way. But the majority of cars don't need it, for example our economy CL. It's built to get good gas mileage and not the powerfull motor the Type S is built up to be.
Also as got rice stated, FI cars almost always need high octane. ANy thing lower (same w/ high CR motors) would detonate on a low octane.
because it all depends on the car. For example the type S needs a higher octane because it's a high compression engine. My parents navigator is the same way. But the majority of cars don't need it, for example our economy CL. It's built to get good gas mileage and not the powerfull motor the Type S is built up to be.
Also as got rice stated, FI cars almost always need high octane. ANy thing lower (same w/ high CR motors) would detonate on a low octane.
09-30-2003, 07:26 AM
#57
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Originally posted by TeamBlurryCL
anything more than 87=waste of money.
anything more than 87=waste of money.
09-30-2003, 07:38 AM
#58
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Good statement up to a point, fusionnv. Cam gears will not change you compression ratio. Its a matter of how much you compress th e fuel in the combustion chamber or cylinder. High compression pistons will change the compression ratio.
09-30-2003, 07:46 AM
#59
4-8-15-16-23-42
finally some good advice
How many time has this subject come up
PEOPLE: Octane is not a rating of gas quality, even though the providers have done a good job of convincing otherwise.
Compression compression compression --bottom line period.
How many time has this subject come up
PEOPLE: Octane is not a rating of gas quality, even though the providers have done a good job of convincing otherwise.
Compression compression compression --bottom line period.
09-30-2003, 08:39 AM
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A Consumer's Guide:
Gasoline Octane for Cars
from Gasoline Questions & Answers for Your Car
API Publication 1580, Sixth edition, January 1996
Q. What is octane?
A. Octane is a measure of a gasoline's ability to resist knock or pinging noise from an engine. In older vehicles, knock may be accompanied by engine run-on, or dieseling. Knock is the sharp, metallic-sounding engine noise that results from uncontrolled combustion. Severe knocking over an extended time may damage pistons and other engine parts. If you can hear knocking, you should have your engine checked to make sure it is calibrated correctly and does not have a mechanical or electrical problem, or use a higher octane gasoline.
In most vehicles no benefit is gained from using gasoline that has a higher octane number than is needed to prevent knock. However, in some vehicles equipped with a knock sensor (an electronic device installed in many modern engines that allows the engine management system to detect and reduce knock), a higher octane gasoline may improve performance slightly.
Q. What determines my car's octane requirements?
A. Your car's octane requirements are mainly determined by its basic design. In addition, variations in engines due to manufacturing tolerances can cause cars of the same model to require a different octane of several numbers. Also, as a new car is driven, its octane requirement can increase because of the buildup of combustion chamber deposits. This continues until a stable level is reached, typically after about 15,000 miles. The stabilized octane requirement may be 3-6 numbers higher than when the car was new. Premium or midgrade fuel may be advisable to prevent knock.
Other factors also influence your car's knocking characteristics:
Temperature - Generally, the hotter the ambient air and engine coolant, the greater the octane requirement.
Altitude - The higher the altitude above sea level, the lower the octane requirement. Modern computer-controlled engines adjust spark timing and air-fuel ratio to compensate for changes in barometric pressure, and thus the effect of altitude on octane requirement is smaller in these vehicles.
Humidity - The drier the air, the greater the octane requirement. The recommendations that vehicle manufacturers give are for normal- to low-humidity levels.
Your engine's spark timing - The octane requirement increases as the spark timing is advanced. Both the basic setting of the spark timing and the operation of the automatic spark advance mechanisms are important in controlling knock. In some computer controlled engines, the spark timing can only be changed by replacing modules in the computer. If they are equipped with knock sensors, these computer controlled engines have the ability to retard the ignition temporarily when a sensor detects knock. This temporarily reduces the octane requirement and may also temporarily reduce vehicle performance.
Method of driving - Rapid acceleration and heavy loading, such as pulling a trailer or climbing a hill, may result in a greater octane requirement. Stop-and-go driving and excessive idling can increase octane requirements by causing the buildup of combustion chamber deposits.
Malfunctions of emission control systems - An improperly functioning emissions control system can affect the octane requirement by changing the air-fuel mixture or by not providing dilution gases through the exhaust gas recirculation (EGR) system. If a malfunction occurs, your vehicle should be taken to a qualified vehicle service mechanic. Some problems are indicated by warning lights on the driver's instrument panel.
Q. How many grades of gasoline are available?
A. Most places that sell gasoline offer three octane grades of unleaded gasoline--regular at 87 (R+M)/2, midgrade at 89 (R+M)/2, and premium at 93 (R+M)/2. In high-altitude areas such as the Rocky Mountain Region of the U.S., the (R+M)/2 number may be lower by one or two numbers. After January 1, 1996, no leaded gasoline may be sold for highway use.
Q. Which octane grade should I use in my car?
A. Use the recommendation in your car owner's manual as a starting point for selecting the proper gasoline. If you notice engine knock over an extended time and your engine is adjusted correctly, try a higher octane gasoline. Also, higher octane may provide a performance benefit (better acceleration) in cars equipped with knock sensors. Many late model and high-performance (turbo-charged and supercharged) cars fall into this category.
Gasoline Octane for Cars
from Gasoline Questions & Answers for Your Car
API Publication 1580, Sixth edition, January 1996
Q. What is octane?
A. Octane is a measure of a gasoline's ability to resist knock or pinging noise from an engine. In older vehicles, knock may be accompanied by engine run-on, or dieseling. Knock is the sharp, metallic-sounding engine noise that results from uncontrolled combustion. Severe knocking over an extended time may damage pistons and other engine parts. If you can hear knocking, you should have your engine checked to make sure it is calibrated correctly and does not have a mechanical or electrical problem, or use a higher octane gasoline.
In most vehicles no benefit is gained from using gasoline that has a higher octane number than is needed to prevent knock. However, in some vehicles equipped with a knock sensor (an electronic device installed in many modern engines that allows the engine management system to detect and reduce knock), a higher octane gasoline may improve performance slightly.
Q. What determines my car's octane requirements?
A. Your car's octane requirements are mainly determined by its basic design. In addition, variations in engines due to manufacturing tolerances can cause cars of the same model to require a different octane of several numbers. Also, as a new car is driven, its octane requirement can increase because of the buildup of combustion chamber deposits. This continues until a stable level is reached, typically after about 15,000 miles. The stabilized octane requirement may be 3-6 numbers higher than when the car was new. Premium or midgrade fuel may be advisable to prevent knock.
Other factors also influence your car's knocking characteristics:
Temperature - Generally, the hotter the ambient air and engine coolant, the greater the octane requirement.
Altitude - The higher the altitude above sea level, the lower the octane requirement. Modern computer-controlled engines adjust spark timing and air-fuel ratio to compensate for changes in barometric pressure, and thus the effect of altitude on octane requirement is smaller in these vehicles.
Humidity - The drier the air, the greater the octane requirement. The recommendations that vehicle manufacturers give are for normal- to low-humidity levels.
Your engine's spark timing - The octane requirement increases as the spark timing is advanced. Both the basic setting of the spark timing and the operation of the automatic spark advance mechanisms are important in controlling knock. In some computer controlled engines, the spark timing can only be changed by replacing modules in the computer. If they are equipped with knock sensors, these computer controlled engines have the ability to retard the ignition temporarily when a sensor detects knock. This temporarily reduces the octane requirement and may also temporarily reduce vehicle performance.
Method of driving - Rapid acceleration and heavy loading, such as pulling a trailer or climbing a hill, may result in a greater octane requirement. Stop-and-go driving and excessive idling can increase octane requirements by causing the buildup of combustion chamber deposits.
Malfunctions of emission control systems - An improperly functioning emissions control system can affect the octane requirement by changing the air-fuel mixture or by not providing dilution gases through the exhaust gas recirculation (EGR) system. If a malfunction occurs, your vehicle should be taken to a qualified vehicle service mechanic. Some problems are indicated by warning lights on the driver's instrument panel.
Q. How many grades of gasoline are available?
A. Most places that sell gasoline offer three octane grades of unleaded gasoline--regular at 87 (R+M)/2, midgrade at 89 (R+M)/2, and premium at 93 (R+M)/2. In high-altitude areas such as the Rocky Mountain Region of the U.S., the (R+M)/2 number may be lower by one or two numbers. After January 1, 1996, no leaded gasoline may be sold for highway use.
Q. Which octane grade should I use in my car?
A. Use the recommendation in your car owner's manual as a starting point for selecting the proper gasoline. If you notice engine knock over an extended time and your engine is adjusted correctly, try a higher octane gasoline. Also, higher octane may provide a performance benefit (better acceleration) in cars equipped with knock sensors. Many late model and high-performance (turbo-charged and supercharged) cars fall into this category.
09-30-2003, 08:45 AM
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Originally posted by Bluesman
Good statement up to a point, fusionnv. Cam gears will not change you compression ratio. Its a matter of how much you compress th e fuel in the combustion chamber or cylinder. High compression pistons will change the compression ratio.
Good statement up to a point, fusionnv. Cam gears will not change you compression ratio. Its a matter of how much you compress th e fuel in the combustion chamber or cylinder. High compression pistons will change the compression ratio.
09-30-2003, 09:09 AM
#62
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Originally posted by chris3240929
A Consumer's Guide:
Gasoline Octane for Cars
from Gasoline Questions & Answers for Your Car
API Publication 1580, Sixth edition, January 1996
Q. What is octane?
A. Octane is a measure of a gasoline's ability to resist knock or pinging noise from an engine. In older vehicles, knock may be accompanied by engine run-on, or dieseling. Knock is the sharp, metallic-sounding engine noise that results from uncontrolled combustion. Severe knocking over an extended time may damage pistons and other engine parts. If you can hear knocking, you should have your engine checked to make sure it is calibrated correctly and does not have a mechanical or electrical problem, or use a higher octane gasoline.
In most vehicles no benefit is gained from using gasoline that has a higher octane number than is needed to prevent knock. However, in some vehicles equipped with a knock sensor (an electronic device installed in many modern engines that allows the engine management system to detect and reduce knock), a higher octane gasoline may improve performance slightly.
Q. What determines my car's octane requirements?
A. Your car's octane requirements are mainly determined by its basic design. In addition, variations in engines due to manufacturing tolerances can cause cars of the same model to require a different octane of several numbers. Also, as a new car is driven, its octane requirement can increase because of the buildup of combustion chamber deposits. This continues until a stable level is reached, typically after about 15,000 miles. The stabilized octane requirement may be 3-6 numbers higher than when the car was new. Premium or midgrade fuel may be advisable to prevent knock.
Other factors also influence your car's knocking characteristics:
Temperature - Generally, the hotter the ambient air and engine coolant, the greater the octane requirement.
Altitude - The higher the altitude above sea level, the lower the octane requirement. Modern computer-controlled engines adjust spark timing and air-fuel ratio to compensate for changes in barometric pressure, and thus the effect of altitude on octane requirement is smaller in these vehicles.
Humidity - The drier the air, the greater the octane requirement. The recommendations that vehicle manufacturers give are for normal- to low-humidity levels.
Your engine's spark timing - The octane requirement increases as the spark timing is advanced. Both the basic setting of the spark timing and the operation of the automatic spark advance mechanisms are important in controlling knock. In some computer controlled engines, the spark timing can only be changed by replacing modules in the computer. If they are equipped with knock sensors, these computer controlled engines have the ability to retard the ignition temporarily when a sensor detects knock. This temporarily reduces the octane requirement and may also temporarily reduce vehicle performance.
Method of driving - Rapid acceleration and heavy loading, such as pulling a trailer or climbing a hill, may result in a greater octane requirement. Stop-and-go driving and excessive idling can increase octane requirements by causing the buildup of combustion chamber deposits.
Malfunctions of emission control systems - An improperly functioning emissions control system can affect the octane requirement by changing the air-fuel mixture or by not providing dilution gases through the exhaust gas recirculation (EGR) system. If a malfunction occurs, your vehicle should be taken to a qualified vehicle service mechanic. Some problems are indicated by warning lights on the driver's instrument panel.
Q. How many grades of gasoline are available?
A. Most places that sell gasoline offer three octane grades of unleaded gasoline--regular at 87 (R+M)/2, midgrade at 89 (R+M)/2, and premium at 93 (R+M)/2. In high-altitude areas such as the Rocky Mountain Region of the U.S., the (R+M)/2 number may be lower by one or two numbers. After January 1, 1996, no leaded gasoline may be sold for highway use.
Q. Which octane grade should I use in my car?
A. Use the recommendation in your car owner's manual as a starting point for selecting the proper gasoline. If you notice engine knock over an extended time and your engine is adjusted correctly, try a higher octane gasoline. Also, higher octane may provide a performance benefit (better acceleration) in cars equipped with knock sensors. Many late model and high-performance (turbo-charged and supercharged) cars fall into this category.
A Consumer's Guide:
Gasoline Octane for Cars
from Gasoline Questions & Answers for Your Car
API Publication 1580, Sixth edition, January 1996
Q. What is octane?
A. Octane is a measure of a gasoline's ability to resist knock or pinging noise from an engine. In older vehicles, knock may be accompanied by engine run-on, or dieseling. Knock is the sharp, metallic-sounding engine noise that results from uncontrolled combustion. Severe knocking over an extended time may damage pistons and other engine parts. If you can hear knocking, you should have your engine checked to make sure it is calibrated correctly and does not have a mechanical or electrical problem, or use a higher octane gasoline.
In most vehicles no benefit is gained from using gasoline that has a higher octane number than is needed to prevent knock. However, in some vehicles equipped with a knock sensor (an electronic device installed in many modern engines that allows the engine management system to detect and reduce knock), a higher octane gasoline may improve performance slightly.
Q. What determines my car's octane requirements?
A. Your car's octane requirements are mainly determined by its basic design. In addition, variations in engines due to manufacturing tolerances can cause cars of the same model to require a different octane of several numbers. Also, as a new car is driven, its octane requirement can increase because of the buildup of combustion chamber deposits. This continues until a stable level is reached, typically after about 15,000 miles. The stabilized octane requirement may be 3-6 numbers higher than when the car was new. Premium or midgrade fuel may be advisable to prevent knock.
Other factors also influence your car's knocking characteristics:
Temperature - Generally, the hotter the ambient air and engine coolant, the greater the octane requirement.
Altitude - The higher the altitude above sea level, the lower the octane requirement. Modern computer-controlled engines adjust spark timing and air-fuel ratio to compensate for changes in barometric pressure, and thus the effect of altitude on octane requirement is smaller in these vehicles.
Humidity - The drier the air, the greater the octane requirement. The recommendations that vehicle manufacturers give are for normal- to low-humidity levels.
Your engine's spark timing - The octane requirement increases as the spark timing is advanced. Both the basic setting of the spark timing and the operation of the automatic spark advance mechanisms are important in controlling knock. In some computer controlled engines, the spark timing can only be changed by replacing modules in the computer. If they are equipped with knock sensors, these computer controlled engines have the ability to retard the ignition temporarily when a sensor detects knock. This temporarily reduces the octane requirement and may also temporarily reduce vehicle performance.
Method of driving - Rapid acceleration and heavy loading, such as pulling a trailer or climbing a hill, may result in a greater octane requirement. Stop-and-go driving and excessive idling can increase octane requirements by causing the buildup of combustion chamber deposits.
Malfunctions of emission control systems - An improperly functioning emissions control system can affect the octane requirement by changing the air-fuel mixture or by not providing dilution gases through the exhaust gas recirculation (EGR) system. If a malfunction occurs, your vehicle should be taken to a qualified vehicle service mechanic. Some problems are indicated by warning lights on the driver's instrument panel.
Q. How many grades of gasoline are available?
A. Most places that sell gasoline offer three octane grades of unleaded gasoline--regular at 87 (R+M)/2, midgrade at 89 (R+M)/2, and premium at 93 (R+M)/2. In high-altitude areas such as the Rocky Mountain Region of the U.S., the (R+M)/2 number may be lower by one or two numbers. After January 1, 1996, no leaded gasoline may be sold for highway use.
Q. Which octane grade should I use in my car?
A. Use the recommendation in your car owner's manual as a starting point for selecting the proper gasoline. If you notice engine knock over an extended time and your engine is adjusted correctly, try a higher octane gasoline. Also, higher octane may provide a performance benefit (better acceleration) in cars equipped with knock sensors. Many late model and high-performance (turbo-charged and supercharged) cars fall into this category.
as we've said, don't listen to us or the proven facts and dyno's that have come from trying different octanes. Go ahead and keep doing what you are doing
09-30-2003, 01:11 PM
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Originally posted by CLpower
as we've said, don't listen to us or the proven facts and dyno's that have come from trying different octanes. Go ahead and keep doing what you are doing
as we've said, don't listen to us or the proven facts and dyno's that have come from trying different octanes. Go ahead and keep doing what you are doing
So, if you get bored, read it...it's pretty good for reference. They don't go into compression, etc...but it does explain why newer cars need a higher octane than, say, an old 88 Caprice POS...
09-30-2003, 11:36 PM
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Originally posted by Outlaw
Costco Regular Unleaded 87. Heh, the gas there is the cheapest out here in Cali! Last time I went, I think it was like 1.69? Somethin like that.
Costco Regular Unleaded 87. Heh, the gas there is the cheapest out here in Cali! Last time I went, I think it was like 1.69? Somethin like that.
10-01-2003, 04:02 PM
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I had my injectors cleaned out a while ago because I felt a real power lag. The mechanic who did it said he has never seen injectors that clogged after only 50k miles. He asked me what brand and octane gas I used. I told him bp (cheapest in my area) and 87 because that's what the book called for. He told me to put chevron 93 in it because it would keep the injectors and pistons clean. He also said I’d get better gas mileage and more power due to a more complete combustion in the chamber. This is from a certified acura mechanic. What he said makes sense to me.....but like everyone else said. Go with what you feel.
10-01-2003, 05:38 PM
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that's what i was wondering because it only had 50k miles on it. i was thinking maybe i needed a new fuel filter but i researched it a while back and the one we have doesn't need to be changed ever, or so i read. i don't understand how a filter would not need to be changed.
10-01-2003, 05:47 PM
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He's right about the Chevron gas...it has Techron in it, which is basically a injector cleaner. Fuck the 93 tho, I use Chevron 87. No off brand gas, sometimes Exxon if there is no Chevron around.
10-02-2003, 05:34 PM
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Originally posted by matteichenfels
If you read the owners manual it says car will run best on 87
If you read the owners manual it says car will run best on 87
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