87 will be fine for our use. Car engines are tuned for certain octanes of fuel. If an engine is designed to use 91 and you put in 87, the knock sensors would step in and adjust the timing so that the "knocks" would not develop. You would not get the same performance out of the car nor would you see similar MPG numbers as well. Now, if you put 91 into a car designed for 87, you would not really gain anything and just be spending more money on fuel than you need to. One of the many great selling points is that the Elantra gets 40 MPG on 87 octane fuel. If you look at other cars such as the MINI, sure it may get 37 MPG but it uses premium fuel. I guess what I'm saying here is that to save your money and spend your money on different mods to your car such as tint, engine pad, chrome pedals, etc. I hoped this helped.

 

Just use the gas the manufacturer recommends, you don't get any extra credit for premium fuel.

 

The Elantra was designed to burn 87 and cannot benefit from higher octane fuels. Use 87.

The word "premium" is misleading, because it implies "better" which is not the case. Premium fuel is simply more resistant to detonation, which is not an issue in a moderate-compression engine like the Elantra has. Some companies try to entice you to use premium on the basis that it has more detergents, but it would be far cheaper to simply add a bottle of cleaner every so often. And these extra cleaners are not necessary according to Hyundai.... regular fuel contains enough of them.

 

+1. And, according to some experts (Pat Goss - Motorweek), you can actually cause problems when using premium in an engine not designed for it. Use what the manufacturers recommend. From my own experimentation with this over the years with many new vehicles, I've never noticed any difference in performance or mileage when playing with using the different ratings. The only difference is cost.

The other thing people refer to a lot is "pinging" (pre-detonation) sounds. If your car is actually "pinging" when you mash the go-pedal, it needs to go to the dealer, 'cause it ain't the gas... it's a mechanical or computer issue. Modern cars make a lot of injector/egr valve/ noises that cars of the past didn't make.

 

one difference with premium is the fact that it doesnt have ethanol,, here in Canada 87 (regular) can have upto 10% ethanol,, and that does affect mileage

 

QUOTE (northy @ Jun 28 2011, 10:32 AM) index.php?act=findpost&pid=468205

one difference with premium is the fact that it doesnt have ethanol

No offense, but that sounds like urban legend to me. Can you cite a credible information source?

 

here in Canada it has to be legally posted on pumps ethanol content,,

 

here in Canada this is shell gas listings,,,

Bronze: May contain up to 10 % ethanol
Silver: May contain up to 5 % ethanol
V-Power: Contains no ethanol

 

here is the msds

https://services.shell.ca/llutilsp/livelink...&i=33516068

and i also called customer service,, and those numbers i posted are 100% correct,,

so much for the urban legend

 

South of your border it all contains 10%.

 

Here ethanol is hard to avoid with exception of a few stations located near the boat docks.
I did use the 87 non ethanol on a past car and found the car to run smoother and with more pep.

 

QUOTE (northy @ Jun 28 2011, 11:17 AM) index.php?act=findpost&pid=468236

here is the msds

https://services.shell.ca/llutilsp/livelink...&i=33516068

and i also called customer service,, and those numbers i posted are 100% correct,,

so much for the urban legend

Thanks northy. One puzzling thing though: Shell's regular grade "bronze" shows the exact same composition (ie: no ethanol mentioned): https://services.shell.ca/llutilsp/livelink...&i=33515320

uzzled:

 

https://services.shell.ca/llutilsp/livelink...&i=46962655


and the gentlemen at shell canada i talked to,, said they have no intentions of changing there formula in the near future

 

What the heck is "regular unleaded ethanol gasoline"? All I see at the local Shell stations is Bronze, Silver and Gold/V-Power, none of which list ethanol in their MSDS.

 

pull up to the pumps and read,,,

or better yet call 1-800-661-1600 and get it from the horses mouth

 

QUOTE (northy @ Jun 28 2011, 01:02 PM) index.php?act=findpost&pid=468295

pull up to the pumps and read,,,

or better yet call 1-800-661-1600 and get it from the horses mouth

the long and short to all of this nonsense is that the elantra along with ALL other cars manufactured today are designed to run on 87 octaine fuel which contains Ethanol. the ONLY time you should use otherwise is if the car needs it.

 

I filled up yesterday at a "Husky" station (those in Canada would be familiar with it. All octane's listed "May contain up to 10% ethanol."

 

the nonsense part is that ethanol lowers your fuel economy with no benefit,, and if you want to avoid ethanol shell gold has no ethanol,, just a option for people,,, its as simple as that,,

 

OK, on pg. 1-3 on the 2012 owner's manual it says "Your new vehicle is designed to use only unleaded fuel having a pump octane number ((R+M)/2) of 87 (Research Octane Number 91) or higher." So, does it mean that when they said 29/40 mpg they are based on 91 octane?!?

 

QUOTE (Elan1 @ Jun 28 2011, 04:31 PM) index.php?act=findpost&pid=468483

OK, on pg. 1-3 on the 2012 owner's manual it says "Your new vehicle is designed to use only unleaded fuel having a pump octane number ((R+M)/2) of 87 (Research Octane Number 91) or higher." So, does it mean that when they said 29/40 mpg they are based on 91 octane?!?

It's referring to the two different ways of calculating octane number. Notice how on fuel pumps somewhere, it has the octane rating and then in small writing under that it usually says "(R+M)/2 Method"

Some places use a different calculation that results in a different (higher) number and that is called RON. So if the pump says 87 R+M/2, you're ok. If the pump says RON, 91 is ok.

Disclaimer: I'm no expert, I just saw this post and went to google and got the answer.

Source: http://www.carbibles.com/fuel_engine_bible_pg3.html

 

QUOTE (silverfoxc @ Jun 28 2011, 04:53 PM) index.php?act=findpost&pid=468489

It's referring to the two different ways of calculating octane number. Notice how on fuel pumps somewhere, it has the octane rating and then in small writing under that it usually says "(R+M)/2 Method"

Some places use a different calculation that results in a different (higher) number and that is called RON. So if the pump says 87 R+M/2, you're ok. If the pump says RON, 91 is ok.

Disclaimer: I'm no expert, I just saw this post and went to google and got the answer.

Source: http://www.carbibles.com/fuel_engine_bible_pg3.html

Cool... thanks

 

QUOTE (Don67 @ Jun 28 2011, 12:57 PM) index.php?act=findpost&pid=468292

What the heck is "regular unleaded ethanol gasoline"? All I see at the local Shell stations is Bronze, Silver and Gold/V-Power, none of which list ethanol in their MSDS.

That is gas which is regular as opposed to premium (91+) or mid-grade (89) that is unleaded since gas used to be leaded but went out with the advent of catalytic converters AND has up 10 10% Ethanol. Hope that helps.

 

QUOTE (ranjo @ Jun 29 2011, 08:42 AM) index.php?act=findpost&pid=468699

That is gas which is regular as opposed to premium (91+) or mid-grade (89) that is unleaded since gas used to be leaded but went out with the advent of catalytic converters AND has up 10 10% Ethanol. Hope that helps.

Thanks ranjo. My question was really Shell-specific, however.

Up here in Canada, Shell pumps display three grades of gasoline: Bronze (87), Silver (89) and Gold/V-Power (91). According to the MSDS sheets, all three grades are ethanol-free. But there's a mysterious fourth MSDS sheet for "regular unleaded ethanol gasoline", which does not appear on any Shell pump I've ever seen. I'm wondering where this fourth grade fits into their product shelf.

 

QUOTE (ranjo @ Jun 29 2011, 08:42 AM)
Thanks ranjo. My question was really Shell-specific, however.

Up here in Canada, Shell pumps display three grades of gasoline: Bronze (87), Silver (89) and Gold/V-Power (91). According to the MSDS sheets, all three grades are ethanol-free. But there's a mysterious fourth MSDS sheet for "regular unleaded ethanol gasoline", which does not appear on any Shell pump I've ever seen. I'm wondering where this fourth grade fits into their product shelf.

Fourth one "regular unleaded ethanol gasoline" refers to E85 blended fuel. (similar to Bio diesel for the diesel guys, B100 = 100% bio diesel, B80 = 80 % bio 20% regular diesel, etc etc.) so E85 = 85% ethenol 15% regular gasoline.
(hope that answers your question). Oh and the pump for E85 is a different color (cant remember what color the pump is but its clearly a different color & listed as e85 fuel)

 

QUOTE (Don67 @ Jun 29 2011, 08:57 AM) index.php?act=findpost&pid=468707

Thanks ranjo. My question was really Shell-specific, however.

Up here in Canada, Shell pumps display three grades of gasoline: Bronze (87), Silver (89) and Gold/V-Power (91). According to the MSDS sheets, all three grades are ethanol-free. But there's a mysterious fourth MSDS sheet for "regular unleaded ethanol gasoline", which does not appear on any Shell pump I've ever seen. I'm wondering where this fourth grade fits into their product shelf.

don67 im not sure what answer you need which alread hasnt been specified???

 

I actually filled my 2nd tank up in Premium, worse mistake of my life, will never do it again. Aside from wasting $$$, it bottlenecks my engine, giving me only an average of 19mpg combined when I should be getting like 26+.... Ugh first world problems.

(2012 Black Elantra GLS w. Preferred Package)

 

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