Gas Grade for a new 04 Accord???

I went to service 4 days ago to change the oil for the first time, in the mean time, I asked the mechanic about a rattle I have noticed after I came back from Canada. He asked me what grade of Gas am i using, and i said 89 or better. He said, that's why. He says that this engine is designed to use grade 87. I looked up the manual of the car, and the manual says 86 or better. Whom should i trust ??!
Anyone has any idea which one should i be using?

Thanks

Bob

well...i recommend finding another place to work on your car. The higher the octane the better. Your putting in 89, which is above "recommendation" I run 89 10% ethonal mix- midlands gas, and its 4 cents cheaper and two points octane better.

If you use to high of octane your car can be considered out of warranty if some thing goes wrong.
The dealorships analyze everything with your car when something goes wrong so that they can get out of fixing something.

When I first bought one of my Chrysler cars New In 1997, I use 98 octain gas and managed to end up replacing my 2 (6cyl) O2 Sensors in the first 25,000 miles and the dealer told me to read my owners manual...guess what?...Manual quoted me to use only 87 octain fuel...made me face Red..

Later again..
WheelBrokerAng


Thumbnail Image

There' no real benefit in running 89+ octane in a stock car that's made to run 87. Don't think it would hurt, but save your money. Higher octane's work because of detonation limits. Stock engines that are tuned to 86-87 octane have low compression and no forced induction. Basically you're protecting your self from nothing and gaining nothing.

What makes a higher octane. The higher the octane rating the more evenly the fuel burns. I too would suggest that you find another service person. Also in response to the Chrysler person. Why have a Chrysler in the first place. Those cars weren't the most durable made. in fact some might say that the cruddy wormnaship of those cars helped bring the asain makers to flourish.

Putting in higher octane than required only drains your wallet faster, there is NO benefit to the car. The old school thinking that "if regular is good premium is better" is just that....old school and outdated. Both the 4 cylinder and V-6 are set to run on regular grade. Since premium fuel actually burns slower than regular it can cause a great deal more carbon to form on the pistons over the long term.....not a good thing.

Stick with a name brand 87 octane and keep the extra $$ in your pocket.



He is right. It doesnt do jack $hit for your car. You might here more horsepower or 'it will clean out your engine'. Its all a myth so, no, it wont. IT WILL DO ABSOLUTLY NOTHING FOR YOUR CAR!

most likely id use regular or 87 octane like the tech says...hondas dont run good with stock internals on the motor. plus with gas prices runnin so high id go with the cheaper stuff knoing it wont hurt nething..the higher the octane you use the richer ur car will run making ur car run rougher because the combination of air-fuel...most people think it would make ur car run better but it doesnt. see the higher the octane level the higher the combustion..and when you dont have enough air flow into the engine the less MPG and the less HP u will have because your running with a higher combustion of fuels....well good luck!

[Deleted by Admins]

my mom gets 89 on her 00 v6 ex and she gets better mileage every time compared to 87. Her manual says 87 so i think it depends on how powerful the engine.

quote:

ORIGINAL: 2000Ex

my mom gets 89 on her 00 v6 ex and she gets better mileage every time compared to 87. Her manual says 87 so i think it depends on how powerful the engine.

I wonder if the minor gain in mileage outweighs the cost difference between the two grades? Not arguing, mind you, just curious.

those who tell that theres no benefit - are probably dont understand the true purpose of the gasoline

Yes there is a better milage and yes there is a better explosion and yes longer life for Catalyst and O2 sensors

Fill up 93 from the factory on stock

quote:

ORIGINAL: Evlampius

those who tell that theres no benefit - are probably dont understand the true purpose of the gasoline

Yes there is a better milage and yes there is a better explosion and yes longer life for Catalyst and O2 sensors

Fill up 93 from the factory on stock

You'll have to back that up with some facts because it sounds like a misguided opinion to me. Using a higher grade than required can accelerate wear on emissions components and does nothing but make you feel better about spending an additional 20 cents per gallon.

http://chemistry.about.com/library/weekly/aabyb100401.htm

http://www.thecarconnection.com/Car_Shopping_Tips/TCC_Driving_Tip_Choosing_Gas.S212.A3031.html

http://www.cartalk.com/content/columns/Archive/2000/April/08.html

http://www.straightdope.com/columns/041008.html

which facts should i back off on?

Back off???

I said some facts to back up your claim.

FACT: The ONLY way to prove better mileage from higher octane is to have the test done in a controlled enviroment on a dyno, (same wind direction/speed, temperature, humidity, etc. You cannot do this on daily or even hourly conditions. By the time you drive a specific distance and refill - conditions change. If it could be proven, you can bet the petroleum companies would jump on it.

Higher octane -more power? Just a more precisely controlled detonation ONLY necessary for higher compression engines.

Believe it or not.