Weird... 92 Octane really does help us...
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Just Be
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Weird... 92 Octane really does help us...
For the past month or two, I have been experimenting with Premium fuel... I wanted to see if my gas milage improves... now being fair and driving the same as I always do.. each of the times with Premium, I averaged around 230-240 miles per tank, and w/ regular, I get around 190-200. The results were the same each time. Those figures were done with 3 tanks of premium, and 3 tanks of regular... I don't understand how this is possible??
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when you did this did you wait till you were completely on "E" because i thought you couldn't just switch up fuel like that going from like what is it i think 87 to 92?
i myself have tried this many times and i get the same result it doesnt even matter if the car is stock i get the same results and i tell everyone but they say im wasting my money blah blah so i dont say anything anymore i just full up with 93 octane and i'll never put regular in my car again
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From: 562/909, California, US
Rep Power: 0 only 240??? i always use 89 and i get around 350 - 400 per tank for the last couple months ( i thought that's allready bad gas mileage) ......... and usualy i get around 400-425 per tank
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From: Lexington, KY
Rep Power: 585 i think the numbers are ok 240/13gallon tank=18mpg 400/13gallon tank=30mpg, uh the mfg tag on the window in the lot doesnt even go that high. so maybe if ur running a honda insight or something i could see that happening but not in our cars
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From: Corona, California, US
Rep Power: 304 iguess ot all depends on how hard the person drives their vic and also what kind of terrian you drive in (ie hills and valleys or just plains) also how fast you drive and other things
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From: Coventry, Rhode Island, US
Rep Power: 0 I usually get 340-390 w/ moderate beatings (33-35mpg). But it's ALL highway. Octane level only matters per your compression ratio. More compression = higher octane. If you ran 87 in a high ratio motor it detonate. We run 9:1 max (stock ex) you don't need high octane.
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From: Fort Oglethorpe
Rep Power: 317 I'm gonna put in my 2¢ here. I've said it before, but my car ran like $HiT on 87 octane. It runs ok on 89, and seems to run great on 92. Granted, it takes the computer a while to adjust to different octanes.
You're got to remember that the civic isn't a sports car and doesn't act like it. Cars are made to be almost idiot-proof, so that people that don't change their oil, mix the gas quality,etc etc can't mess them up and cause the car to break down. Sports cars are different. They're MADE for higher performance, have higher compression, etc and have to be treated as such. However, they are also made to be idiot-proof to some extent. The point is that you're NOT gonna see big gains with small mods because the car isn't designed that way. The RSX IS!
Putting higher octane in a civic may give you better gas mileage, but most sources I've read say you probably won't even notice it. My own perception over the years, with many different cars, is that higher octane makes the car run smoother and does seem to give you a little extra boost in power. I've noticed it even on the civic. It only amounts to less than 2 bucks difference each fillup when the price difference is 10¢/gallon and you fill it up with 13 gallons. I'll gladly pay the 2 bucks once a week or so for a smoother running engine.
The way you drive the car makes all the difference in mileage figures. You can't drive it the same identical way for comparison, because of different traffic conditions, but you can average it out over a few tanks like
MangoEX did. So, I give you props for proper technique.
The other thing that will make all the difference is all the stupid mods that people have done to their cars. Spark plugs, I/H/E, big heavy wheels and tires, suspension changes. These things all contribute to your mileage in one way or another. The only true comparison is two identical STOCK cars. I doubt anyone in the thread has a completely stock car, so you can't honestly compare with any accuracy.
Even TIRE PRESSURE can change your mileage drastically and contribute to poor handling and traction. Don't overinflate or underinflate your tires. The recommended pressure is on the tire. Read it and keep the tires at the proper level.
Finally, if you're not getting the mileage figures that your car claims (ex. 32-38 on the DX/LX 5 speed), then you've either:
1. modded the hell out of it and it's getting worse mileage.
2. you have a serious problem with the motor and/or computer.
3. you're using lousy fuel and/or the fuel filter is clogged.
You're got to remember that the civic isn't a sports car and doesn't act like it. Cars are made to be almost idiot-proof, so that people that don't change their oil, mix the gas quality,etc etc can't mess them up and cause the car to break down. Sports cars are different. They're MADE for higher performance, have higher compression, etc and have to be treated as such. However, they are also made to be idiot-proof to some extent. The point is that you're NOT gonna see big gains with small mods because the car isn't designed that way. The RSX IS!
Putting higher octane in a civic may give you better gas mileage, but most sources I've read say you probably won't even notice it. My own perception over the years, with many different cars, is that higher octane makes the car run smoother and does seem to give you a little extra boost in power. I've noticed it even on the civic. It only amounts to less than 2 bucks difference each fillup when the price difference is 10¢/gallon and you fill it up with 13 gallons. I'll gladly pay the 2 bucks once a week or so for a smoother running engine.
The way you drive the car makes all the difference in mileage figures. You can't drive it the same identical way for comparison, because of different traffic conditions, but you can average it out over a few tanks like
MangoEX did. So, I give you props for proper technique.
The other thing that will make all the difference is all the stupid mods that people have done to their cars. Spark plugs, I/H/E, big heavy wheels and tires, suspension changes. These things all contribute to your mileage in one way or another. The only true comparison is two identical STOCK cars. I doubt anyone in the thread has a completely stock car, so you can't honestly compare with any accuracy.
Even TIRE PRESSURE can change your mileage drastically and contribute to poor handling and traction. Don't overinflate or underinflate your tires. The recommended pressure is on the tire. Read it and keep the tires at the proper level.
Finally, if you're not getting the mileage figures that your car claims (ex. 32-38 on the DX/LX 5 speed), then you've either:
1. modded the hell out of it and it's getting worse mileage.
2. you have a serious problem with the motor and/or computer.
3. you're using lousy fuel and/or the fuel filter is clogged.
Last edited by Bellz; Oct 5, 2003 at 12:39 PM.
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From: St Catharines, Canada
Rep Power: 0 Originally posted by Bellz
The recommended pressure is on the tire. Read it and keep the tires at the proper level.
3. you're using lousy fuel and/or the fuel filter is clogged.
The recommended pressure is on the tire. Read it and keep the tires at the proper level.
3. you're using lousy fuel and/or the fuel filter is clogged.
b. Or the air filter is clogged.
While I don't want to discount Mango's results, I can't theoretically see how higher octane increases mileage - it's not like the car squirts less gas into the cylinders because of higher octane. Or maybe it does?
i use 89, drive VERY fast and aggressively, and get 32mpg.....AROUND TOWN! Maybe my car's just special or something. I mean, I do everything that would make it have less mpg, but i still get 32...oh well, im not complaining.
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From: Fort Oglethorpe
Rep Power: 317 Originally posted by exe30
a. Actually the recommended pressure is in the owner's manual. The pressure on the tire is usually the maximum pressure for the tire itself, and is not specific to the car it's mounted on.
b. Or the air filter is clogged.
a. Actually the recommended pressure is in the owner's manual. The pressure on the tire is usually the maximum pressure for the tire itself, and is not specific to the car it's mounted on.
b. Or the air filter is clogged.
b. thats FUEL filter, not air. I'm not sure why you quoted it if you wasn't gonna say anything about it.
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From: LA, CALi
Rep Power: 405 i usually get like over 300 miles, but thats when i pushing it on the "E" sign is on. i fill up with 91 because my ignition coils only recommend 91 or higher.
1. i have modded the crap out of my engine
2. i drive like a maniac, my rpm is above 3,000 about97 percent of the time
3. i have a lead foot
1. i have modded the crap out of my engine
2. i drive like a maniac, my rpm is above 3,000 about97 percent of the time
3. i have a lead foot
Last edited by HondaLuver; Oct 5, 2003 at 05:05 PM.
um...we have a 13.2 gallon tank. I've filled my up to 12.8 so if we only have 11 gallon then I don't know where my gas is going. I usually get 350 - 400 on mine just regular driving. I have an 01 AT. If its highway, I've gotten as much as 500 to the tank
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From: Fort Oglethorpe
Rep Power: 317 Okay, just to confirm a few things, I looked up the specs on the tank and mileage on Edmunds.
Fuel Tank Capacity: 13.2 gal.
Range in Miles: (City/Highway):
DX/LX: Manual: 422.4 mi. / 501.6 mi.
DX/LX: Automatic: 382.8 mi. / 501.6 mi.
HX: Manual: 475.2 mi. / 580.8 mi.
HX: CVT Automatic: 462 mi. / 528 mi.
EX: Manual: 422.4 mi. / 488.4 mi.
EX: Automatic: 396 mi. / 501.6 mi.
This should confirm what myself and many others have been saying about where your MPG and range should be.
Fuel Tank Capacity: 13.2 gal.
Range in Miles: (City/Highway):
DX/LX: Manual: 422.4 mi. / 501.6 mi.
DX/LX: Automatic: 382.8 mi. / 501.6 mi.
HX: Manual: 475.2 mi. / 580.8 mi.
HX: CVT Automatic: 462 mi. / 528 mi.
EX: Manual: 422.4 mi. / 488.4 mi.
EX: Automatic: 396 mi. / 501.6 mi.
This should confirm what myself and many others have been saying about where your MPG and range should be.
