Ok guys, just a random question. I was wondering if a stock LSJ could take 110 octane fuel without any problems. I know that racing fuel can clog up the cat, but other than that, is there anything I need to worry about? It won't burn up the valves or injectors will it?

 

110 is usually leaded, which will F up your o2 sensors and your cat.

secondly, it's a complete 100% waste of money on a stock car

 

may i ask why?

 

if you are racing where the humidity and heat is high it might help to throw like 3 or 4 gallons in to help prevent timing from being pulled.

 

Basicly put: Octane is the fuel's ability to resist detonation, or pinging, or knock.
The higher the number the more the fuel/air mixutre can be compressed before
knock occurs.
With the compression ratio for these cars and the SC (espessly if you have a downsized pully)
You should really run 91 Minimum. YOu can get away with 87 if your
bone stock.
Running a higher octane number, will give you almost no benifit.
Running a lower octane number, can cause problems.

 

There is 110 in my area that is unleaded.

I will sometimes (rarely) put a (1) gallon of 100 in my car and fill the rest with 93. Keep it nice and clean.

Clogging up the cat is not exactly a "myth", but lets just say it isn't very common. You'd have a better chance of finding a needle in a haystack.

No it won't hurt the valves, injectors, fuel lines, fuel pump, etc. I'm not sure where you heard this, or what is making you ask this, but you have been horribly misinformed.

 

If you have unleaded 110Octane, you should be abe to put that in any car, Even old cars that need 87 and it should run fine.

 

Why? Especially if stock. Even Stage 3 SS/SC's in HOM don't need 110.

 

Not needed, but i dont think it would be bad for it either.

 

all race fuel used to be leaded and that is what hurt cats and injectors and so on

 

as long as its unleaded your fine

 

You're going to have to look REAL hard to find leaded gas. And it didn't hurt injectors. It WOULD hurt the cat, BUT, the main problem was the valve SEATS, it would corrode them.

"Leaded gasoline will no longer be available in the United States after December 31, 1995."

http://yosemite.epa.gov/R10/airpage....d+Gas+Phaseout

 

As said, if you use leaded it can and will F up the O2 and Cat. If the fuel is unleaded it is perfectly fine to run every once in a while, though completely pointless unless you are tuned for it. Also, running higher octane fuel does NOT "clean" anything.

 

You can buy leaded gas in many places.

Higher octane will do nothing for you unless you are tuning for it or already having detonation problems.

It definately doesn't 'clean the engine' as many people seem to think.

 

In some places, aka, Gas City, in my area, they do use more detergents that allow the gasoline to "burn cleaner", thus, NOT leaving shitty, nasty, gummy, deposits on your valves.

You can find this on their website, and it will redirect you to the company that they obtain their race gas from.

The only places I have EVER heard of selling leaded is SunCo, which there are none in Illinois anyway so I don't really care.

The most common, and practical, thing that is recommended is, IF YOUR CAR TAKES LEADED, to fill it up with UNLEADED, and then buy leaded additives from an auto store, as it is 10000000000000000000000000x easier than coming across a gas station with leaded gas that will actually sell it to you. Leaded is used for race cars, marine race boats, and air-crafts.

 

Leaded gas is easy to find here. If I can find some in a city with less than 10k people you aren't looking very hard.

 

It must vary by state to state then. I am 99.9% sure that they absolutely do not sell, or it is very rare, to find leaded in the United States.

Are you sure it's leaded? Honestly most people just assume it's leaded because of the octane.

What gas station is it?

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EDIT: Here is what brand Gas City sells. It is called Rockett Brand Racing Fuel.

And here are the product information sheets.

http://www.rockettbrand.com/techsupp...plication.html

100 is clearly unleaded, as it says, anything higher is leaded.


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Oh.. And a little section from a "Q&A" with Motor-Trend, and Rockett-Fuel.

"Motor Trend: If higher octane fuel is used, will an engine make more power?"

"Rockett Brand: The answer is maybe. If your car pings/detonates, you will benefit from a higher octane. In some cases, even when detonation is not present, higher octane fuel can improve power because of its special fuel chemistry that promotes improved combustion efficiency. Improved combustion efficiency means that more of the gasoline is being burned in the combustion chamber thus making more horsepower; less is being burned/expelled in the exhaust."

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Another link from Rockett Brand about how 100 UNLEADED improves a vehicle.

http://www.rockettbrand.com/techsupp...ceBenefits.pdf

Honestly, if you're going to call me out, you'd better be prepared to provide evidence. One of Rockett's refineries is near me, as I live by the Chicagoland Speedway NASCAR track, so people who use race gas around here are pretty well informed. And Rockett is a very well known, and respected, race gas provider.

 

1. Getting leaded fuel definitely depends on the state. Automotive leaded fuel is illegal to sell in Missouri, so I know you definitely will not find any here.

2. Believing everything you read about higher octane gas, especially when coming from a company that sells said fuel, is not "doing research". MotorTrend is not what I would call a truely "reputable" place for acquiring scientific research on things such as octane and fuel combustability.

3. Higher octane fuel does not have "special chemistry" that improves combustion efficiency. All they do is increase the amount of methyl tertiary-butyl ether that is mixed with the fuel to increase the octane. The higher methyl tertiary-butyl ether my "slightly" help increase oxygenation of the fuel, but it will not be some hugely noticable increase that will "clean" the engine nor will it cause any noticable increase in horsepower. Many companies are also now using an increase in ethyl alcohol to raise octane instead of methyl tertiary-butyl ether so the oxygenation benefits are even less.

 

i didnt even know there was a 110 octane, the highest ive seen in kansas is 91

 

Generally if you car runs better on a higher than recommended octane its because something is wrong with your car. Hence the if you failed emissions it might help. If you build a car run run on a certain fuel like 100 octane and then run it on 93 you will make less power because you will have to change the timing to prevent detonation. If you have a car built for 93 and you use 100 you wont gain power.

 

1. It's supposed to be "illegal", however, on my way home, I stopped at Gas City, and to my surprise, right there, next to 100 Unleaded, was 111 Leaded.

2. I would. MotorTrend can back up their claims. Can you prove otherwise?

3. Read it again, you're missing the point. I provided many links.

The highest unleaded I've ever seen is 100. Anything higher is USUALLY leaded.

 

it will work... but if your not tuned for it... you wont get anymore power out of it

 

Alright wow. All I asked was a simple question and it turns into a massive debate/flame thread. Thanks for the answers guys but the argument is not needed. As for leaded/unleaded gas. I can go to the gas station at the corner here and get leaded gas. And there's a Holiday gas station in town that has both Leaded and Unleaded 91 octane gas.

 

It's not flaming it all. Simply stating facts. Whether others want (or refuse), to believe them, is another story. And what is wrong with a debate? Debates make the world go around.

And I've never ever heard of 91 leaded. Ever.