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Regular verses 91 octane for the MO??

30K views 37 replies 22 participants last post by  zebelkhan  
#1 ·
Regular verses 91 octane for the MO?

I saw John Stossel on the TV show 20/20 the others day, and he said it is a myth that 91 octane fuel is better for your car than regular 87 octane fuel, unless your car says you MUST use 91 octane premium because it is a higher compression engine.

So my question is… How many of you out there are using regular 87 octane fuel in your MO, and find that it runs just as well as it does on 91 octane premium?

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http://www.abcnews.go.com/2020/Health/story?id=939056&page=2

The Price Is Premium, But 'Gas Is Gas'

When you head out on vacation this summer, you'll probably spend big bucks filling your car's gas tank, while griping about the price. But a lot of you who are complaining could be spending less for your gas.

You have a choice of gas at the pump. The price of 93 octane premium is more than regular 87 octane — about 20 cents more per gallon at many stations. Because premium costs more, a lot of people think it's better for their cars.

People told us premium gasoline gives them better gas mileage, more power and cleaner engines.

Regular gas, one woman told "20/20," "leaves a lot of gunk in your engine … That's what my daddy taught me."

But her daddy — and many of you who buy premium — are wasting your money.

NASCAR driver Joe Nemechek knows this. "Believe me, I've pumped gas in from about every gas station there's been in my personal cars. Whether it's around town or on vacation or wherever, you put the regular in there it keeps on running," he said. The NASCAR drivers, mechanics, and car makers will tell you that for 90 percent of the cars sold today, high octane is no better than regular gas. It won't give you better mileage, more power or a cleaner engine. NASCAR crew member Lisa Smokstad told us what every expert told us.

"It is a myth that cars run better on premium gas," she said.
Some cars do need higher octane — older cars that knock, and cars with high-compression, high-revving engines like Ferraris, Bentleys, Jaguars, Acuras, Mercedes and Corvettes.
But 90 percent of new cars don't need it — check your owner's manual.

The car manufacturers and every car expert we consulted told us that for most cars, high octane is a waste of money. Even the gas companies that sell the high-octane fuel — and make more money off of it — admit most people don't need it. But they don't go out of their way to tell you that.

Once you've figured out which octane to buy, does the brand matter? Are the well-known national brands better than the no-name brands, which are usually cheaper?

People we spoke to gave similar reasons for buying name-brand gasoline that they gave for buying high-octane gas. They believed the national brands were higher quality, and better for their cars.

But they may not know that all the gas, brand name and generic, comes from the same refineries. Brand names do use different additives, but it doesn't make them better for your car.

In 1996, the Federal Trade Commission forced Amoco, which denied any wrongdoing, to stop claiming in its ads that it was better than other brands without scientific evidence to back it up.
"It's a myth that brand-name gas is better than a no-name gas," said mechanic Dave Bowman, co-host of "Two Guys Garage" on cable TV's Speed channel.

"It doesn't make any difference whether you're buying a branded product or a no-name product," he said.

"The only difference is price."

The NASCAR drivers agree about that, too. "It's a myth, you don't need the high-octane gasoline, you don't need the, the name-brand stuff," said driver Jimmie Johnson.

Some of the fans have figured that out.

One man summed it up nicely for us. "The manufacturers and the gasoline dealers, they all want you to buy that expensive stuff. It all runs on the same stuff. Gas is gas."
 
#28 ·
YEA

Just for the H*** of it I put in 5 gallons of 100+ octane they have at the local Hot rod Gas station (Actually a the Pump Island believe it or not)

I really could tell the difference. WOW WOW.

I have even tried the octane booster and it was noticeable but not the same.
 
#29 ·
Re: YEA

GripperDon said:
Just for the H*** of it I put in 5 gallons of 100+ octane they have at the local Hot rod Gas station (Actually a the Pump Island believe it or not)

I really could tell the difference. I have even tried the octane booster and it was noticeable but not the same WOW WOW
There's a common misconception perpetuated by the octane booster companies: each bottle says it raises your octane by 1 point. That doesn't mean going from 87 to 88 octane, that means going from 87 to 87.1 octane.
 
#30 ·
So is 91 octane really that common? Down here we have 87, 89, and then it jumps to 93 for premium. I don't think I've ever seen 91... ???
 
#31 ·
lilbit

Same here. I t is very difficult to find 91 octane. Here we have 87, 89, and 93 octane. I bought 93 octane last week and paid 2.43 per gallon. Whether it is just perceived or real, I do notice a difference when I use the higher octane.
 
#32 ·
Re: Re: YEA

Tyler_Canada said:


There's a common misconception perpetuated by the octane booster companies: each bottle says it raises your octane by 1 point. That doesn't mean going from 87 to 88 octane, that means going from 87 to 87.1 octane.
Exactly, that is some great info for the crowd here. Thanks for clearing up a common misperception.
 
#35 ·
say run premium, then try a full tank of regular. If you cannot tell the difference, use regular. For me, I can definitely feel the difference between premium 93 and regular 87, esp when the weather gets very hot.

I'm with Eric on this one. During the gas price spike I stopped buying high test. A few days later my wife said she heard a few pings. I checked the mileage which usually comes in at 21.7 MPG.
It had dropped to 20.7. Not much highway driving in these numbers. More like rural and towns with some traffic. I gave the 87 a try for about a month and I could feel the difference as well as see it on the read out. Not to mention the annoying ping here or there.

Ditto the same results on the 3.5 Altima that I own.

I don't like paying more at the pump.....but I will.
Bob1
 
#36 ·
Very interesting...

My gas mileage had dropped a lot. I was getting around 21 mpg for mostly hwy driving. So on my last fill-up I decided to use regular, thinking if I am getting that mileage, might as well pay less for the gas.

What do you know...I am back to 23.8 mpg with regular gas...:D

Performance does not seem to have been affected....

This goes against my prior experience so I am not sure what to make of it....:confused:
 
#37 ·
Best Octane

I use whatever I'm able to siphon out of my neighbors' cars at night and it seems to run fine - probably a mixture of several octanes.
:2:

Just kidding. 93 Octane (Exxon, Mobil, Shell) seems to run best.