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post #1 of 47 Old 04-09-2017, 08:30 AM Thread Starter
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premium or regular gas?

Here's the debate...

premium or regular gas for the 2017 V6 coupes??

I know its recommended to put regular unleaded gas, but would premium gas (91 Shell in Canada) affect the car in any way or do any damage?

In Canada we have 91 Shell V-power which is premium gas, or the regular 87 unleaded...

what is your opinion, what do you guys feed your accords with???
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post #2 of 47 Old 04-09-2017, 08:32 AM
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No benefit. Use regular.

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post #3 of 47 Old 04-09-2017, 09:00 AM
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Regular 87 octane for my V6. Why spend more money for nothing?
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post #4 of 47 Old 04-09-2017, 09:51 AM
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You will not likely realize any measurable value or gains from using premium fuel. However, if using premium is something you want to use....go for it as it will not hurt the car!

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post #5 of 47 Old 04-09-2017, 11:15 AM
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Hmm... Makes me wonder if anyone has dynoed a 9th Gen V6 with 91 or 93 before. On the 8th Gen V6, you get a little more power and torque with premium, and it's dyno-proven.

To answer your question, use 87 to save money. If you can get 87 E0(no ethanol), get that; I personally use 91 because E0 is only available in premium in the Great White North. Ethanol is not good for cars.

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post #6 of 47 Old 04-09-2017, 11:16 AM
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I do what the owner's manual says, which is to use top-tier gasoline with a Techron-like cleaning agent.

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post #7 of 47 Old 04-09-2017, 11:17 AM
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The BMWs I owned recommended premium so the engines wouldn't knock. Premium actually slows down the burning of the fuel in the cylinder so it expands evenly and doesn't push one side of the piston harder than the other. The Honda engine is designed differently and doesn't need premium. I have come to like not paying 50 cents more a gallon for premium.

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post #8 of 47 Old 04-09-2017, 11:49 AM Thread Starter
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Thanks for the input! my only concern was if it were going to hurt the car by putting 91 fuel... im a V-power fan, and my big issue is the ethanol factor when filling up regular. It's a peace of mind to me by filling up premium, as there is no ethanol
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post #9 of 47 Old 04-09-2017, 12:05 PM
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Just read the post again and realized you are from Ontario.

In BC, I used to get gas at Chevron because you can get Save On Points(Save On is a BC supermarket chain for anyone who doesn't know), but I stopped going there once I realized all of their grades except for the 94(which is a bit of an overkill) are ethanol-stained. I recently went back to Chevron in my Corolla, which I am just feeding with regular gas, and found out that they stopped giving you Save On Points. Shame.

I also like to get Shell gas, even though it's a bit of out of the way at where I live. My dad used to go to Shell and Esso only when he had his Land Rover, so I just go to Shell now.

Ethanol is bad stuff, especially in the BC rainter.

Again, 87 is fine, but if you hate ethanol like me, I don't think 91 will hurt anything. Some of the Honda V6s are used in Acura cars as well, and Acura cars often require you to use premium, so I think Honda V6s can work with premium. If you want to unleash its full potential, you can always just tune your car to work with premium if that's your thing.
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post #10 of 47 Old 04-09-2017, 02:26 PM
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I asked the same question due to the RDX premium requirement with the same engine.

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post #11 of 47 Old 04-09-2017, 04:16 PM
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Try using premium fuel for 30 days, and report back if you think you noticed any performance, mileage, et cetera improvements.

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post #12 of 47 Old 04-09-2017, 04:20 PM
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87 is fine. I wish we could get gas w/o ethanol here.
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post #13 of 47 Old 04-09-2017, 05:03 PM
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Quote:
Originally Posted by pspressart View Post
The BMWs I owned recommended premium so the engines wouldn't knock. Premium actually slows down the burning of the fuel in the cylinder so it expands evenly and doesn't push one side of the piston harder than the other. The Honda engine is designed differently and doesn't need premium. I have come to like not paying 50 cents more a gallon for premium.
NO, NO, and NO. This is a myth.

Octane doesn't even measure what it originally was meant to measure: the % of Octane molecules in the fuel. NOW, Octane is a rating, not an expression of the % of Octane molecules in the fuel.

The ONLY thing a higher octane rating describes is RESISTANCE to premature ignition. Neither is octane rating a statement of quality. There are GOOD quality high octane-rated fuels, POOR quality high octane-rated fuels, as well a GOOD quality regular octane-rated fuels, and POOR quality regular octane-rated fuels. There is no greater BTU content for higher octane-rated gas, nor for regular octane-rated gas. Octane rating does NOT describe the speed of ignition either....that's another myth.

The higher the compression ratio of a naturally-aspirated engine (that is NOT a Direct-Injection engine, DI engines can get by with a slightly lower octane-rating per compression-ratio value), the more likely it is that it requires a greater resistance to premature ignition. Therefore, the higher-compression BMW engines often require a higher octane-rated fuel. Turbo and Super-charged engines oftentimes require higher octane-rated fuels because they essentially increase the compression ratio by squeezing in more air/gas into the combustion chamber.
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post #14 of 47 Old 04-09-2017, 05:06 PM
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Quote:
Originally Posted by seldomseen View Post
Try using premium fuel for 30 days, and report back if you think you noticed any performance, mileage, et cetera improvements.
That report would be useless information.

What people think they experience and what is actually happening are too often not correlated. It takes sophisticated measuring systems to determine what, if any, differences there are in performance and/or efficiency...and the two are not necessarily related.
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"Synthetic" is not a literal definition of a laboratory-created base lubricant, it has been a marketing term since the Castrol Mobil-1 lawsuit in the 1990's.
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post #15 of 47 Old 04-09-2017, 05:20 PM
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It takes sophisticated measuring systems to determine what, if any, differences there are in performance and/or efficiency...and the two are not necessarily related.
Agree 100% with that. People who think their butt-dyno is accurate are fooling themselves. Unless you can measure it objectively, you aren't learning anything.
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