What's the best Gasoline
05-11-2013, 08:49 AM
#27
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RE: What's the best Gasoline
Jeez, dare I tread here?
I used to run around with a fuels specialist and his analysis was that the best gas to use for all of my engines was plain old cheap stuff from the corner station. He gave me a laundry list of (well educated - it was his JOB to know) reasons that I have long since forgotten. Some of them have been touched on here but the biggest I recall in our discussion was that our 2 stroke engines won't see very much benefit from the additives created for 4 stroke aircraft engines nor will they see any benefit from the additives put in the expensive stuff at the corner station.
I don't claim to "know" but his directions "use the cheap stuff and don't worry about it" has worked for me the last 20+ years.
YMMV!
I used to run around with a fuels specialist and his analysis was that the best gas to use for all of my engines was plain old cheap stuff from the corner station. He gave me a laundry list of (well educated - it was his JOB to know) reasons that I have long since forgotten. Some of them have been touched on here but the biggest I recall in our discussion was that our 2 stroke engines won't see very much benefit from the additives created for 4 stroke aircraft engines nor will they see any benefit from the additives put in the expensive stuff at the corner station.
I don't claim to "know" but his directions "use the cheap stuff and don't worry about it" has worked for me the last 20+ years.
YMMV!
05-11-2013, 09:17 AM
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RE: What's the best Gasoline
No, it's not nonsense. The higher the octane rating, the slower the fuel burns. Which is what you want when running high compression. If you run low octane fuel in a high compression engine you get more of an explosion instead of a clean burn. And it happens way before the piston reaches the optimal position in the cylinder. That's why you get a knock which is really bad on engines. You can run high octane fuels in low compression engines without harm, but you will loose a little performance + some green out of your wallet. What you don't want to do is run low octane fuel in an engine that requires high octane fuel. That will eventually cost you a whole lot of green out of your wallet.
05-11-2013, 10:06 AM
#29
RE: What's the best Gasoline
ORIGINAL: Bob Pastorello
+1
Remember, we're using basically weedeater or chainsaw engines. I would wager there has NEVERbeing a question utterred at a lawn and garden supply store about which gas to use....
+1
Remember, we're using basically weedeater or chainsaw engines. I would wager there has NEVERbeing a question utterred at a lawn and garden supply store about which gas to use....
05-11-2013, 04:21 PM
#32
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RE: What's the best Gasoline
ORIGINAL: airega1
Hey buddy , save yourself some headaches and just go get regular gas at any gas station and have a good day
ORIGINAL: oldbassard
Hey Gang
A short time ago, I posted about gasoline, specifically leaded 110octane racing gasoline. One of the members here argued that it's made in bulk and he took a stand with 100LL avation gas.
I talked to a man who has worked the last 30 years in a refinery, about gasoline production. He said ''It's all made in bulk, with all the small aircraft that burn 100LL you see every day, it would never be possible to make it otherwise''
He also said, whether it is oils, gasolines or whatever petroleum products the products are made by thecompanies specifications, for instance atthe refinery he works at they can motor oile for Penzoil, Quaker State Valvoline and many other oil company namesby thier specs, the same goes for gasoline.
Some companies for instance Qiuk Trip has thier own gasoline specs (QT adds alcohol). While other companies don't sell the alcohol supprted gasolines. 100 LL gasoline has it's ownspecs as does 110 octane racing gasoline and all of it is produced in bulk.
I have read that leaded gasolineis particularly good for two stroke engines because the ''Lead'' lubricates the cylinder and makes the engine run cooler. Well I don't know about that, I can't prove nor disprove it, I do know that I will use the higher content leaded racing fuel in my airplane. I am quite sure the 100 LL is great gasoline but I choose racing gasoline.
What I am told is what we call lead in gasoline isn't lead at all nor does it have anything to do with lead.
Somegreat advantages that you get with either 100LL or 110 Octane racing gasoline iseasier enginestarts, better performance and I am told longer engine life.
Hey Gang
A short time ago, I posted about gasoline, specifically leaded 110octane racing gasoline. One of the members here argued that it's made in bulk and he took a stand with 100LL avation gas.
I talked to a man who has worked the last 30 years in a refinery, about gasoline production. He said ''It's all made in bulk, with all the small aircraft that burn 100LL you see every day, it would never be possible to make it otherwise''
He also said, whether it is oils, gasolines or whatever petroleum products the products are made by thecompanies specifications, for instance atthe refinery he works at they can motor oile for Penzoil, Quaker State Valvoline and many other oil company namesby thier specs, the same goes for gasoline.
Some companies for instance Qiuk Trip has thier own gasoline specs (QT adds alcohol). While other companies don't sell the alcohol supprted gasolines. 100 LL gasoline has it's ownspecs as does 110 octane racing gasoline and all of it is produced in bulk.
I have read that leaded gasolineis particularly good for two stroke engines because the ''Lead'' lubricates the cylinder and makes the engine run cooler. Well I don't know about that, I can't prove nor disprove it, I do know that I will use the higher content leaded racing fuel in my airplane. I am quite sure the 100 LL is great gasoline but I choose racing gasoline.
What I am told is what we call lead in gasoline isn't lead at all nor does it have anything to do with lead.
Somegreat advantages that you get with either 100LL or 110 Octane racing gasoline iseasier enginestarts, better performance and I am told longer engine life.
05-11-2013, 09:56 PM
#33
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RE: What's the best Gasoline
ORIGINAL: jkpape
No, it's not nonsense. The higher the octane rating, the slower the fuel burns. Which is what you want when running high compression. If you run low octane fuel in a high compression engine you get more of an explosion instead of a clean burn. And it happens way before the piston reaches the optimal position in the cylinder. That's why you get a knock which is really bad on engines. You can run high octane fuels in low compression engines without harm, but you will loose a little performance + some green out of your wallet. What you don't want to do is run low octane fuel in an engine that requires high octane fuel. That will eventually cost you a whole lot of green out of your wallet.
No, it's not nonsense. The higher the octane rating, the slower the fuel burns. Which is what you want when running high compression. If you run low octane fuel in a high compression engine you get more of an explosion instead of a clean burn. And it happens way before the piston reaches the optimal position in the cylinder. That's why you get a knock which is really bad on engines. You can run high octane fuels in low compression engines without harm, but you will loose a little performance + some green out of your wallet. What you don't want to do is run low octane fuel in an engine that requires high octane fuel. That will eventually cost you a whole lot of green out of your wallet.
Its nonsense and repeating it doesn't make you knowledgable on the subject
05-12-2013, 03:43 AM
#34
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RE: What's the best Gasoline
I'm really hungry and love to eat and been wanting to eat for some time now, but which fork is best to use? I've heard things about the 3 prong fork but some say the 4 prong will make your dining better.
THE ABOVE STATEMENT IS WHAT THIS THREAD IS WORTH!!!
THE ABOVE STATEMENT IS WHAT THIS THREAD IS WORTH!!!
05-12-2013, 05:40 AM
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RE: What's the best Gasoline
I suggest that you go do some studying on the subject. This very subject on fuel octane was covered in great length when I went to A&P school. Also, the main benefit of using 100LL over autogas is that it has a shelf life of around 8 years (per the fuel manufactures) where autogas starts to break down in about 6 weeks. The only drawback to 100LL is that it has a high lead content in it which causes plug fouling. You can lead a horse to water, but you can't make him drink:-(
05-12-2013, 06:44 AM
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RE: What's the best Gasoline
ORIGINAL: jkpape
I suggest that you go do some studying on the subject. This very subject on fuel octane was covered in great length when I went to A&P school. Also, the main benefit of using 100LL over autogas is that it has a shelf life of around 8 years (per the fuel manufactures) where autogas starts to break down in about 6 weeks. The only drawback to 100LL is that it has a high lead content in it which causes plug fouling. You can lead a horse to water, but you can't make him drink:-(
I suggest that you go do some studying on the subject. This very subject on fuel octane was covered in great length when I went to A&P school. Also, the main benefit of using 100LL over autogas is that it has a shelf life of around 8 years (per the fuel manufactures) where autogas starts to break down in about 6 weeks. The only drawback to 100LL is that it has a high lead content in it which causes plug fouling. You can lead a horse to water, but you can't make him drink:-(
05-12-2013, 08:54 AM
#37
RE: What's the best Gasoline
Although I have been running 87 octane through my DA engines for over a decade without issue, I have a DLE 55 now that seems to be a real shaker. Advancing the timing has helped so I wanted to try advancing a little more. Right now it is set to 32 degrees and running 89 octane. It is running better then it ever has.
05-12-2013, 09:02 AM
#38
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RE: What's the best Gasoline
You can keep advancing it until it breaks up at full throttle, then retard it back some, WARNING! an extemely advanced engine will kick pretty hard
05-12-2013, 09:38 AM
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RE: What's the best Gasoline
ORIGINAL: jkpape
I suggest that you go do some studying on the subject. This very subject on fuel octane was covered in great length when I went to A&P school. Also, the main benefit of using 100LL over autogas is that it has a shelf life of around 8 years (per the fuel manufactures) where autogas starts to break down in about 6 weeks. The only drawback to 100LL is that it has a high lead content in it which causes plug fouling. You can lead a horse to water, but you can't make him drink:-(
I suggest that you go do some studying on the subject. This very subject on fuel octane was covered in great length when I went to A&P school. Also, the main benefit of using 100LL over autogas is that it has a shelf life of around 8 years (per the fuel manufactures) where autogas starts to break down in about 6 weeks. The only drawback to 100LL is that it has a high lead content in it which causes plug fouling. You can lead a horse to water, but you can't make him drink:-(
I'm not sure what A&Pschool is but my Petroleum Engieering classes nd hydrocarbon products blending experience tought me that octane and burn speed are not related. Using metal addtives that act as burn rate retardants gives the illusion that they are relted but they are not.. Substituing the lead for an alternate high octane compound recovers octane without the loss of flame speed.
Avgas is a great fuel and has fantastic storage stability becauseit is 95% isoparaffin based and contains no butane (to aid storage stability).
You are right about one thing, taking the horse to water can't make it drink.
05-12-2013, 10:02 AM
#40
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RE: What's the best Gasoline
Hi Guys,
Now you can take a horse to water...and it may not drink...but you can shoot the dang horse...in the middle of the water if you like.
Old Italian saying...
I have been using "0" alcohol gas in my gas engines and its octane is 89%. I also use Royal Purple 2-stroke oil with a 32/1 mix. Zero issues and great power. I'm also just a beginner in running gas engines, with only about a year or so flying them. I was an old Nitro flyer, until nitro fuel hit $30.00 a gallon then tried the smaller gas engines. I fly the 20~36cc size gas engines now and I'm having a ball flying them.
Soft Landings Always,
Bobby of Maui
Now you can take a horse to water...and it may not drink...but you can shoot the dang horse...in the middle of the water if you like.
Old Italian saying...
I have been using "0" alcohol gas in my gas engines and its octane is 89%. I also use Royal Purple 2-stroke oil with a 32/1 mix. Zero issues and great power. I'm also just a beginner in running gas engines, with only about a year or so flying them. I was an old Nitro flyer, until nitro fuel hit $30.00 a gallon then tried the smaller gas engines. I fly the 20~36cc size gas engines now and I'm having a ball flying them.
Soft Landings Always,
Bobby of Maui
05-12-2013, 11:17 AM
#41
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RE: What's the best Gasoline
I find the best gas is from whatever station I'm closest to.
I had an Audi that ran ok on regular, but was a quick sports sedan on the recommended mid-octane gas.
05-12-2013, 11:32 AM
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RE: What's the best Gasoline
TimBle
A&P school is Airframe & Powerplant school. I've been flying r/c for 40 + years, I've had my private pilots rating for 25 years, and the airframe & powerplant mechanics ratings for 9 years. My real job is a mechanical engineer. Also, I have worked on/ran engines that are approaching 100 years old to present day. So, I do have a working knowledge of the internal combustion engine.
Obviously, what you are thinking we are talking about, and what we are actually talking about are
two totally different things. So, let me explain this in more technical terms:
1) Octane rating: A system used to rate the anti-detonation characteristics of a reciprocating engine fuel
Detonation is the explosive , uncontrolled burning of the fuel-air charge. It occurs when the fuel burns unevenly or explosively because of excessive cylinder temperature or pressure in the cylinder. Rather than gently pushing the piston down, detonation slams against the cylinder walls and the piston. The pressure wave hits the piston like a hammer, often damaging the piston, connecting rods, and bearings. Detonation can happen anytime an engine overheats. It also can occur if an improper fuel grade is used. Re: use of fuel grade lower than recommended.
A&P school is Airframe & Powerplant school. I've been flying r/c for 40 + years, I've had my private pilots rating for 25 years, and the airframe & powerplant mechanics ratings for 9 years. My real job is a mechanical engineer. Also, I have worked on/ran engines that are approaching 100 years old to present day. So, I do have a working knowledge of the internal combustion engine.
Obviously, what you are thinking we are talking about, and what we are actually talking about are
two totally different things. So, let me explain this in more technical terms:
1) Octane rating: A system used to rate the anti-detonation characteristics of a reciprocating engine fuel
Detonation is the explosive , uncontrolled burning of the fuel-air charge. It occurs when the fuel burns unevenly or explosively because of excessive cylinder temperature or pressure in the cylinder. Rather than gently pushing the piston down, detonation slams against the cylinder walls and the piston. The pressure wave hits the piston like a hammer, often damaging the piston, connecting rods, and bearings. Detonation can happen anytime an engine overheats. It also can occur if an improper fuel grade is used. Re: use of fuel grade lower than recommended.
05-12-2013, 04:16 PM
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RE: What's the best Gasoline
For "sniffing" I prefere the fumes produced from gasoline that has sat in an unused church bus in a black asphalt parking lot in the sun for at least 2 weeks. Those fumes produce an unreal high
05-12-2013, 04:22 PM
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RE: What's the best Gasoline
What's the best gas?
Fresh.
Yes, fresh gas. Put whatever you want in it. Go buy something that costs 78 bucks a gallon. You're not going to notice the difference between that and regular no name gas.
But for the junkies that need that placebo effect, throw down your cash.
Fresh.
Yes, fresh gas. Put whatever you want in it. Go buy something that costs 78 bucks a gallon. You're not going to notice the difference between that and regular no name gas.
But for the junkies that need that placebo effect, throw down your cash.
05-13-2013, 06:50 AM
#45
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RE: What's the best Gasoline
ORIGINAL: jkpape
TimBle
A&P school is Airframe & Powerplant school. I've been flying r/c for 40 + years, I've had my private pilots rating for 25 years, and the airframe & powerplant mechanics ratings for 9 years. My real job is a mechanical engineer. Also, I have worked on/ran engines that are approaching 100 years old to present day. So, I do have a working knowledge of the internal combustion engine.
Obviously, what you are thinking we are talking about, and what we are actually talking about are
two totally different things. So, let me explain this in more technical terms:
1) Octane rating: A system used to rate the anti-detonation characteristics of a reciprocating engine fuel
Detonation is the explosive , uncontrolled burning of the fuel-air charge. It occurs when the fuel burns unevenly or explosively because of excessive cylinder temperature or pressure in the cylinder. Rather than gently pushing the piston down, detonation slams against the cylinder walls and the piston. The pressure wave hits the piston like a hammer, often damaging the piston, connecting rods, and bearings. Detonation can happen anytime an engine overheats. It also can occur if an improper fuel grade is used. Re: use of fuel grade lower than recommended.
TimBle
A&P school is Airframe & Powerplant school. I've been flying r/c for 40 + years, I've had my private pilots rating for 25 years, and the airframe & powerplant mechanics ratings for 9 years. My real job is a mechanical engineer. Also, I have worked on/ran engines that are approaching 100 years old to present day. So, I do have a working knowledge of the internal combustion engine.
Obviously, what you are thinking we are talking about, and what we are actually talking about are
two totally different things. So, let me explain this in more technical terms:
1) Octane rating: A system used to rate the anti-detonation characteristics of a reciprocating engine fuel
Detonation is the explosive , uncontrolled burning of the fuel-air charge. It occurs when the fuel burns unevenly or explosively because of excessive cylinder temperature or pressure in the cylinder. Rather than gently pushing the piston down, detonation slams against the cylinder walls and the piston. The pressure wave hits the piston like a hammer, often damaging the piston, connecting rods, and bearings. Detonation can happen anytime an engine overheats. It also can occur if an improper fuel grade is used. Re: use of fuel grade lower than recommended.
Typical, you don't know so you start a slightly different conversation. Octane rating and what it means is not under dispute. Your relating octane to flame speed is.
05-13-2013, 08:49 AM
#46
RE: What's the best Gasoline
ORIGINAL: w8ye
You guys in this discussion, remember that I'm here so keep it civil and don't get mad at each other.
You guys in this discussion, remember that I'm here so keep it civil and don't get mad at each other.
Thanks W8YE, love that deer, racoon and panda ok too.
05-13-2013, 02:09 PM
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RE: What's the best Gasoline
Ok guys I have been advised that the state of ohio is going to allow more alcohol and water in there gas that is being sold at the pump. Now everyone says that it's the ethenol that is give them problems with their carbs and fuel lines or is it all the alcohol that's being put in gas. Remember if they can substitute other additives for the oil at a cheaper price what do you think they are going to do. He also told me that with being done I would want to start to empty my weed wackier fuel tank and other 2 cycle engines tanks after each use. Heck I always let them set all winter with what fuel they had in them and go out in the spring and they would take right off. Go figure.
05-13-2013, 04:53 PM
#50
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RE: What's the best Gasoline
ORIGINAL: erieqc
Ok guys I have been advised that the state of ohio is going to allow more alcohol and water in there gas that is being sold at the pump. Now everyone says that it's the ethenol that is give them problems with their carbs and fuel lines or is it all the alcohol that's being put in gas. Remember if they can substitute other additives for the oil at a cheaper price what do you think they are going to do. He also told me that with being done I would want to start to empty my weed wackier fuel tank and other 2 cycle engines tanks after each use. Heck I always let them set all winter with what fuel they had in them and go out in the spring and they would take right off. Go figure.
Ok guys I have been advised that the state of ohio is going to allow more alcohol and water in there gas that is being sold at the pump. Now everyone says that it's the ethenol that is give them problems with their carbs and fuel lines or is it all the alcohol that's being put in gas. Remember if they can substitute other additives for the oil at a cheaper price what do you think they are going to do. He also told me that with being done I would want to start to empty my weed wackier fuel tank and other 2 cycle engines tanks after each use. Heck I always let them set all winter with what fuel they had in them and go out in the spring and they would take right off. Go figure.
I firmly believe is it were completely up to the petroleum companies, there would be NO alcohol of any kind in gasoline. The use of ethanol is pretty much a political and feel good thing as its production requires nearly as much petroleum as it displaces down the production chain.
