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Author Topic: PREMIUM UNLEADED FUEL ????? Back to Topics
CORNHICK

All-Star Author
Omaha

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Message Posted: Jun 21, 2012 3:28:18 PM

I buy premium unleaded for my Impala it may cost 30 cents more but my mechanic says premium does in fact burn cooler than regular gas or the gas with ethanol in it for that matter. He say's if I am going to keep the car for a long time he said to use the Premium! Let me Know what you guys think of this!!!!
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RAB2010
All-Star Author Kalamazoo

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Message Posted: Feb 24, 2013 8:49:11 PM

It is also a cleaner fuel. The Chevy 5.7L looks like new inside after 160,000 burning premium and oil changes every 3,000 or three months.
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albiek1976
Champion Author Ohio

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Message Posted: Feb 24, 2013 8:05:02 PM

I only use 87 octane in my truck. The manual recommends it. I will buy cleaners with additives instead of paying a higher price for higher octane.
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CORNHICK
All-Star Author Omaha

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Message Posted: Feb 24, 2013 5:52:19 PM

why only premium for atvs and snowmobiles is it better?
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cogas1
Champion Author Colorado

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Message Posted: Feb 20, 2013 6:41:38 AM

I only use premium for ATV's, snowmobiles, etc.
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cogas1
Champion Author Colorado

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Message Posted: Feb 20, 2013 6:41:30 AM

I only use premium for ATV's, snowmobiles, etc.
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RecklessFire
Sophomore Author Dallas

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Message Posted: Feb 20, 2013 3:54:02 AM

mechanic fed you a line. engines are made for a specific octane level - it's written in the manual.
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PaylessKY
Champion Author Kentucky

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Message Posted: Feb 20, 2013 12:27:36 AM

Use what your vehicles manual states you should use. As for my area there is no ethanol free gasoline.
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rex0000
Sophomore Author Indianapolis

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Message Posted: Feb 19, 2013 10:27:06 PM

regular
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TXBruin
Champion Author San Antonio

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Message Posted: Jan 26, 2013 9:59:58 AM

no
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sunnyz
Rookie Author Montana

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Message Posted: Dec 14, 2012 7:39:03 PM

Use the octane level recommended by the engine manufacturer
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Casey225
Rookie Author Baton Rouge

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Message Posted: Dec 14, 2012 7:35:02 PM

It's a waste of money. If your car calls for 87 octane thats what it's tuned for and will not run any different with a higher octane. That being said, some sports cars and high end luxery cars are tuned and will only run on 92+ octane.
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CORNHICK
All-Star Author Omaha

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Message Posted: Dec 14, 2012 7:01:18 PM

lissyking gas is not gas it may have ethanol in it
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lissyking
Veteran Author Miami

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Message Posted: Dec 5, 2012 9:24:33 AM

GAs is gas
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tkawashima
Champion Author Honolulu

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Message Posted: Dec 4, 2012 9:48:15 AM

no
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alphanyr
Champion Author Connecticut

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Message Posted: Dec 4, 2012 9:46:15 AM

no
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WEDDY
Champion Author Phoenix

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Message Posted: Dec 4, 2012 9:19:52 AM

Regular, Premium is a waste of money if your car does not need the extra octane.
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Dennis783
Champion Author Des Moines

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Message Posted: Dec 3, 2012 8:02:20 AM

use whatever the manufacturer recommends
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OceansidePoms
Champion Author Massachusetts

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Message Posted: Dec 1, 2012 7:57:35 PM

I USE Premium '92-93' (93.5/94 when available) Octane Gasoline 70+% of the time, Mid Grade(s) '89-91' 20% of the time & Regular '87' - '88' maybe 10% of the time. I prefer Prem. 93 Ethanol Free, so when I can find it around where I live, I get it!
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travelzonecente
Champion Author Riverside

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Message Posted: Dec 1, 2012 1:07:11 PM

gs is gas and you only need 87
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jack4141
Champion Author Alabama

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Message Posted: Dec 1, 2012 12:15:38 PM

Ok
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myphenix
Champion Author New Jersey

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Message Posted: Dec 1, 2012 11:57:28 AM

overrated
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BuzzLOL
Champion Author Toledo

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Message Posted: Dec 1, 2012 10:36:42 AM

.. Buy the octane level recommended by the engine manufacturer... no higher...
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herbiepopnecker
Champion Author British Columbia

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Message Posted: Nov 29, 2012 9:58:05 PM

There's hardly any cars that need premium out there. You're wasting your money
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sagnat
Champion Author Riverside

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Message Posted: Nov 29, 2012 8:47:39 PM

My '02 Benz calls for 91 Octane, anything less and it pings, that pinging can damage the pistons. So, yes the Benz gets premium.



[Edited by: sagnat at 11/29/2012 8:48:53 PM EST]
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BUSSY
Champion Author Dallas

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Message Posted: Nov 29, 2012 9:52:06 AM

Your mechanic is wrong....find a new one.
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MIT05
Champion Author Massachusetts

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Message Posted: Nov 28, 2012 3:34:17 PM

Use oem.
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bluenvoy
Champion Author Nashville

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Message Posted: Nov 28, 2012 10:05:55 AM

Buying gas grades above what your engine requires is a waste of your money.
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gasscout_1
Veteran Author Grand Rapids

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Message Posted: Nov 28, 2012 9:56:54 AM

NOT NOW
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MertieMan
Champion Author Lexington

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Message Posted: Nov 28, 2012 5:29:16 AM

If that particular engine is designed to run on 87 octane, then run 87 octane. A lot of mechanics are just part replacers.
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PaylessKY
Champion Author Kentucky

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Message Posted: Nov 28, 2012 12:40:37 AM

Check the vehicles owners manual and use what it states. Does your mechanic also sell gasoline? Do you by from him? In any case I would use what the manual states.

[Edited by: PaylessKY at 11/28/2012 12:42:01 AM EST]
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middlegrey
Rookie Author Wisconsin

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Message Posted: Nov 27, 2012 1:26:22 PM

Better question about premium:

What happen to 93 Octane and isn't funny how 91 is more expensive than typically.
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SNWDOG
Rookie Author Montana

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Message Posted: Nov 27, 2012 12:18:12 PM

Octane is probably the most misunderstood metric for gasoline.

People believe it can affect power, efficiency, and longevity of the engine. Guess what--it can, but ONLY if your engine would knock (pre-ignite the fuel) with a given octane.

An air-fuel mixture will spontaneously ignite at a certain pressure. Without getting into the chemistry of octane, a higher-octane fuel has a higher energy activation level. Therefore, you can compress a high-octane fuel more than a low-octane fuel before it will self-ignite.

Pressure is the big factor here. At 6000 feet, the air is less dense, and therefore when the piston in your engine hits top dead center, the pressure of the fuel-air mixture is less than it is at sea level. Effectively, the higher altitude reduces the compression ratio of your engine, which is why you can run lower octane without pre-ignition (knocking), and things will be just fine.

There is an exception: every vehicle made in the last 20 years has a knock sensor and a computer which controls various tuning parameters. If your engine was about to knock, the sensor would tell the computer, and the computer would do things like change the fuel mixture and retard the timing to keep it from knocking. THIS is where you lose power and efficiency. The problem is that you will never know this, since the computer will never let the engine knock. However, most engines with less than 10:1 compression ratio will run fine on 85 octane at 5000 feet.

Your owner's manual might say to use only 89 or higher, but that was written from drivers at lower altitudes. You CAN run lower octane without loss of power or efficiency. Since your engine compute will prevent pre-ignition, the only way you can really know is to very carefully track your mileage over a long period of time, and see if you get lower MPG at 85 octane. Most will not. Some smaller, high-compression or turbo-charged engines do need 87 or 89 at higher altitudes, but most do not.

Whew--probably too much information. Just don't be taken in by bogus claims that higher octane fuel will boost power or magically give you better MPG.
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gasscout_1
Veteran Author Grand Rapids

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Message Posted: Nov 27, 2012 5:10:41 AM

Check your maunual.
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2Tall
Champion Author Maryland

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Message Posted: Nov 10, 2012 12:33:53 PM

Check Owners Manual
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mightymoes
Champion Author Boston

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Message Posted: Aug 13, 2012 1:04:48 AM

I can understand the gas companies conning us into using premium in a regular gas vehicle. They make more money. Why would a mechanic repeat the same old tales about premium being better? Get a new mechanic who has some knowledge.
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CORNHICK
All-Star Author Omaha

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Message Posted: Aug 13, 2012 12:34:36 AM

thanks everyone for the advise
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vikings80
All-Star Author South Dakota

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Message Posted: Jun 22, 2012 8:40:52 AM

I use 87.
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Seamus4513
Champion Author Orange County

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Message Posted: Jun 22, 2012 8:40:10 AM

Follow mfr recommendations
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MertieMan
Champion Author Lexington

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Message Posted: Jun 22, 2012 8:27:32 AM

And guess what, your premium has ethanol in it also. Unless the manufacturer recommends premium you are totally wasting your money.
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forresj
Champion Author Wilmington

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Message Posted: Jun 22, 2012 7:49:16 AM

Are you buying gas from your mechanic? Need I say more? Dump your mechanic since he doesn't have your best interest in mind.

I had my Honda accord for 23 years and I used only regular and changed my fluids regularly.

[Edited by: forresj at 6/22/2012 7:54:32 AM EST]
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bluenvoy
Champion Author Nashville

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Message Posted: Jun 22, 2012 5:23:47 AM

Use what ever you Impala's Owners Manual says to use. That's what your engine's designed to run on. Your mechanic is giving you bull.
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jes
Champion Author Pennsylvania

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Message Posted: Jun 22, 2012 4:58:55 AM

Does your mechanic own the station you buy your gas at?
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CORNHICK
All-Star Author Omaha

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Message Posted: Jun 22, 2012 2:39:46 AM

ya ok thanks ill just use the 87
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CobraJ
Champion Author Tampa

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Message Posted: Jun 21, 2012 11:38:26 PM

Ditto to what everyone else said.
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SalukiCO
Sophomore Author Colorado Springs

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Message Posted: Jun 21, 2012 11:28:12 PM

Anything over what the manufacturer recommends is just throwing money away. I doesn't help one bit.
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maxstar
Champion Author Chicago

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Message Posted: Jun 21, 2012 11:15:42 PM

Check your owners manual and use the grade that it recommends. Using premium fuel when regular is called for seems like a waste of money.
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WEPSMAN
Champion Author South Dakota

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Message Posted: Jun 21, 2012 10:14:23 PM

It has some merit. I have checked mileage and if it pencils out to be cheaper per mile, I will run it. I usually run E-10 in my cars. My truck is a diesel and have been running B10. I like the B10 so far.
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plans72
Champion Author Ocala

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Message Posted: Jun 21, 2012 9:33:28 PM

Use what the manufacturer says, just fattening the fat cats otherwise
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carajul
Rookie Author Las Vegas

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Message Posted: Jun 21, 2012 8:37:11 PM

One more thing to add... modern cars have knock ping sensors and adjust accordingly. My '91 cadillac pings so loud it sounds like a motorboat if I use 87 oct. The engine was built specifically for 91 oct. On a new Cadillac, however, the spark plug detination would be compensated by the knock sensor if the owner used 87.

Your Impala will work fine on 87.
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carajul
Rookie Author Las Vegas

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Message Posted: Jun 21, 2012 8:27:12 PM

You need to get a new mechanic. The Impala owners guide says 87 oct. That's all you need. You are wasting your money. The 'only' thing higher oct gas does is burn slower. Its not cleaner or cooler. You're not helping your engine one bit, just Exxon's pockets.
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