[momentum]

I know the owner's manuel says 87 but just curious if anyone got any benefits from using a higher grade?

 

[Accordlover]

2.41 regular from chevron

 

[elp_jc]

No benefit; just a waste of gas.
JC

 

[woody4364]

91 octane

 

[08NighthawkI4MT]

I run 91 for the cleaner burn and it just gives you more power and i like to go fast

 

[Darth Do'Urden]

I run 91 for the cleaner burn and it just gives you more power and i like to go fast

Says the guy with a 4-banger....=P

 

[Ice]

I run 91 for the cleaner burn and it just gives you more power and i like to go fast

No, it does not burn cleaner and no, it does not give you more power because the energy content is the same... Octane rating is simply a measure of anti-knocking, or detonation resistance.

http://en.wikipedia.org/wiki/Octane_rating

 

[Darth Do'Urden]

No, it does not burn cleaner and no, it does not give you more power because the energy content is the same... Octane rating is simply a measure of anti-knocking, or detonation resistance.

http://en.wikipedia.org/wiki/Octane_rating

Go away you, with your silly logic and linking of the Wiki!

(I had MY wiki linked once...took two surgeons and a pair of forceps to clear THAT up.)

 

[osidepunker]

No, it does not burn cleaner and no, it does not give you more power because the energy content is the same... Octane rating is simply a measure of anti-knocking, or detonation resistance.

http://en.wikipedia.org/wiki/Octane_rating

The energy content is the same, but the ECU will advance timing more or less depending on the grade. Higher octane will give you slightly better gas mileage and power (because the engine is able to more efficiently burn the gas). This topic is always beat to death on forums. Most newer cars are like this now.

 

[J30A5Refined]

I use regular unleaded ALL the time but I guess it wouldn't hurt to try Super Unleaded once every 10 fill ups to clean the valves. Has anyone heard of this unwritten rule of using 93 Super Unleaded once in a while to clean your valves?

 

[next_milenium]

I can honestly say the car responds better with higher grade gas and it's not just in my mind. To me, it's quite noticeable. However, I don't need the extra power so I usually fill up with regular.

 

[Osiris_x11]

FWIW, all the grades of gas (87, 91, 93, etc') have equal amounts of detergent, within a particular brand (Chevron, Shell, BP, etc'). My ol' man's best-friend is a major gas/fuel distributor/wholesaler for various companies; he's the one who offered the insight...

My recommendation is to find a brand you like, and stick w/ it. Each brand's formulation/additives vary, and it's bests to stick w/ one to get the benefits.

As far as what grade of gas to put in your tank, I really see no reason why anyone would ignore the vehicle manufacturer's recommendation. There never ever is a down-side to using the recommended grade of fuel, and the only benefits to go w/ higher graded gas is for modified/higher-compression engines. . .



(for-the-record, 87 octane @ the local chain-grocer is $2.199 as of this evening!)

 

[foamypirate]

(for-the-record, 87 octane @ the local chain-grocer is $2.199 as of this evening!)

Ugh...it's still $2.639 up here...

 

[stiller fan]

93 oct.... only gas avail on base.....

 

[woody4364]

FWIW, all the grades of gas (87, 91, 93, etc') have equal amounts of detergent, within a particular brand (Chevron, Shell, BP, etc'). My ol' man's best-friend is a major gas/fuel distributor/wholesaler for various companies; he's the one who offered the insight...

My recommendation is to find a brand you like, and stick w/ it. Each brand's formulation/additives vary, and it's bests to stick w/ one to get the benefits.

As far as what grade of gas to put in your tank, I really see no reason why anyone would ignore the vehicle manufacturer's recommendation. There never ever is a down-side to using the recommended grade of fuel, and the only benefits to go w/ higher graded gas is for modified/higher-compression engines. . .



(for-the-record, 87 octane @ the local chain-grocer is $2.199 as of this evening!)

$2.19! Wow!

 

[stiller fan]

i so wish i was in the states right now.....

 

[Left-Laner]

No, it does not burn cleaner and no, it does not give you more power because the energy content is the same... Octane rating is simply a measure of anti-knocking, or detonation resistance.

http://en.wikipedia.org/wiki/Octane_rating

Canadian gas companies used to promote high octane gas (aka premium) by suggesting that you would see increased power and performance. Of course there is no conclusive evidence of any actual gains with high octane, so they had to stop promoting it like that. However to get around that, here is an example of what Petro-Canada says about high octane fuel:

Why does my vehicle require a higher octane gasoline than is recommended in my owner's manual?
There are two reasons. First, the engine may be at the upper end of the octane requirement range for the particular model. It may, therefore, knock during periods of heavy engine load. The octane requirement for each engine in vehicles of the same make is different because of variations in manufacturing tolerances. Industry testing has shown that this difference can range between two and five octane numbers. While you will not hear knock, the spark timing will be retarded, resulting in loss of power and performance.

The second reason for using a higher-octane gasoline than recommended is because the equilibrium level of combustion chamber deposits is higher than average resulting in a higher than average octane requirement for the engine. Industry testing shows that the octane requirement increase (over the initial 20-50,000 kilometres) can be as much as nine octane numbers. This means that a vehicle that was originally designed for 82 octane fuel may eventually require 91 octane fuel to perform satisfactorily.

Petro-Canada's premium gasoline, SuperClean™, contains a higher level of Tactrol™, our exclusive deposit control additive, than our other grades and will help clean up deposits left by lesser gasoline brands.

In other words, if you use high octane gas, you won't see increased power and/or performance, but instead, you may see a loss if you don't use premium. Sneaky.

 

[Ice]

$2.19! Wow!

I got gas for $2.03 2 days ago...

 

[coupe_nasty]

$2.27 where i am.

 

[RTexasF]

When I switched to 89 octane as an experiment (for several tanks) my mpg took a dump. It dropped to 20 in town and stayed there! Throttle response was slightly better, no question about that. After going back to 87 (several tanks) the mpg is back up where it should be. I have no logical explanation for this odd happening but I'm sticking with 87 from now on!