Last post on Sep 20, 2010 at 6:15 PM
You are in the Honda Accord
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Honda Accord, Fuel System, Sedan
#1 of 89 Premium gas?
Jul 04, 2006 (9:45 am)
Do any of the 06 Accord models require premium gas?
If so, does it matter if it is used or not?
#2 of 89 Re: Premium gas? [stanwelks]
Jul 04, 2006 (12:26 pm)
All Accords since 2003 only require regular unleaded gas...
Short answer? Regular is fine.
#3 of 89 Re: Premium gas? [stanwelks]
Jul 05, 2006 (9:35 am)
Premium gas is not only more expensive, but it burns faster - it lasts short. The performance will be better, but regular will still be fine.
Premium costs more to buy, and doesn't last long.
#5 of 89 Re: Premium gas? [master1]
Aug 11, 2006 (12:36 pm)
On an Accord V-6, I was always under the impression that you get a slight horsepower increase and slightly higher mileage with premium. Something about the computer resetting itself for the premium. On most other cars I've been told it's just a waste of money if the car runs OK on regular w/o pinging.
#6 of 89 Re: Premium gas? [louisn]
Aug 13, 2006 (7:47 pm)
I have heard premium gas could improve power, but it takes a few tanks for the computer to get it. Then only one tank of regular unleaded will put it back to square one. I doubt very much if you would notice the difference in any case. Save your money, and just use regular unleaded. It's one of the advantages of owning a Honda. Take advantage of it.
Buying premium gas when you don't need it is sort of like buying shoes. Huh, you might say. If you wear a size 10 shoe, and you buy a size 12. You get more shoe for the money, but it doesn't do you any good.
#7 of 89 Re: Premium gas? [master1]
Aug 14, 2006 (11:42 am)
Actually that is not correct!
Premium gas has additives to ensure better more even burning and is required only for very high compreession engines or older engines with carbon build-up that start pinging.
Premium gas actually has less power than regular.
The only reason premuimu might ever appear to have more power is not because of the gas, but rather because the engine is retarding the spark with regular to prevent pinging.
There was an old wive's tale, which has never bee substanitated, that a Honda design engineer said that you could gain 10 more horsepower by burning premium instead of regular. But it is just that and has never been substantiated or proven for Honda Accord V6 engines.
#8 of 89 Re: Premium gas? [midnightcowboy]
Aug 16, 2006 (3:45 pm)
....actually, dude named Sasaki, I think was the Honda engineer who equated premium with 10 more HP (and 10 more pounds/feet of torque).
...but I'll be damned if I recall where I saw this info....
Hang in there, MidCow......
#9 of 89 Re: Premium gas? [ezshift5]
Aug 18, 2006 (6:15 am)
I remember that is was in an interview when the V6 7th generation was first introduced. He said it should get more horsepower and then when pinned down it was never proven. An engineer on the design team wanting to make a statement; a design engineer's pipe dream. LOL
cruis'n on regular in Accord premium in S2000
#10 of 89 Re: Premium gas? [master1]
Aug 19, 2006 (8:59 am)
--"Premium gas is not only more expensive, but it burns faster - it lasts short. The performance will be better, but regular will still be fine."--
Uh, welcome to Thermodynamics 101... Premium gasoline has a higher octane rating. Higher octane fuels burn more slowly - which is why they reduce the tendency for an internal combustion engine to ping (pre-detonate) under load. The additional hydrocarbon content of higher octane gasoline also results in a higher BTU content - more power per unit volume. Since a higher octane fuel is more resistant to premature detonation, the engine can be tuned with more spark advance which also results in more power output. In virtually all modern engines with computerized ignition and fuel delivery, millesecond-by-millesecond tuning on the fly occurs courtesy of pre-ignition information supplied to the engine management computer by knock sensors which detect pinging long before human hearing is able to discern it. If premium unleaded is used in lieu of regular unleaded, there will be some power increase realized since the EMC will respond by advancing ignition timing to the point just shy at which pinging occurs. This does not take several tankfulls to accomplish, either. But, ten hp is a stretch - probably closer to 4-5 hp at the engine output shaft and about 2-3 hp where the rubber meets the road after accounting for parasitic losses through the transaxle's gears and bearings, wheel bearings, and losses due to loaded tire rolling deformation. In short, if your engine operates without audible pinging, the use of premium unleaded fuels is neither necessary nor sufficiently advantageous to justify its 20 cents per gallon premium pricing. Contrary to a persistant urban myth, unleaded premium gasoline does NOT contain more combustion chamber deposit cleaning detergents than unleaded regular gasoline, either.