Acetone gas additive - tuning requirements?
11-16-2005, 08:25 AM
#61
Originally Posted by robertbartsch
I always thought high octane fuel burned at a lower temperature but that it has more energy than the cheap stuff; this is what the octane rating is designed to measure; right?
This is why your car will go more miles on a tank of 93 octane than on a tank of 89; right?
In this environment of super high priced fuel, I beleive it is more economical to buy the highest octane fuel sold since the price per gallon difference between high test and cheap gas is relatively small compared to pre-super high priced gas periods. In other words, in percentage terms, high test is only slightly more expensive now than the cheap stuff.
When the oil companies decided to rip us all off to the max, they did not adjust their pricing to keep the spread between the cost of high and low test the same. Consequently, high test is cheaper relative to the "regular" grade. The way state and local fuel tax is imposed also contributes to this anomaly.
This is why your car will go more miles on a tank of 93 octane than on a tank of 89; right?
In this environment of super high priced fuel, I beleive it is more economical to buy the highest octane fuel sold since the price per gallon difference between high test and cheap gas is relatively small compared to pre-super high priced gas periods. In other words, in percentage terms, high test is only slightly more expensive now than the cheap stuff.
When the oil companies decided to rip us all off to the max, they did not adjust their pricing to keep the spread between the cost of high and low test the same. Consequently, high test is cheaper relative to the "regular" grade. The way state and local fuel tax is imposed also contributes to this anomaly.
Higher octane is less combustible and releases slightly less energy. In theory you should get more mileage out of the lower octane, but in our application, the lower octane may trigger enough KR to switch you to the low timing table, which will in turn cost you mileage. The other thing is that many gas companies put better detergents and additives into 93 octane. But theoretically speaking, max gas mileage would come from running the lowest octane where you dont ping. HTH.
12-05-2005, 04:32 PM
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So basically, if my car will run on 87 Octane without detination (pinging) than it should travel further on one gallon of this gas than it would on a gallon of 93 octane; right?
I always assumed that you got BETTER gas mileage from a higher grade of fuel. Is this incorrect?
My wife's car had a check engine light on recently. I suspect it is an O2 sensor issue but I have not connected a scanner to it yet to confirm. After a tank of 93 Sunoco the light went out, however.
Any thoughts on this?
I always assumed that you got BETTER gas mileage from a higher grade of fuel. Is this incorrect?
My wife's car had a check engine light on recently. I suspect it is an O2 sensor issue but I have not connected a scanner to it yet to confirm. After a tank of 93 Sunoco the light went out, however.
Any thoughts on this?
12-06-2005, 03:25 PM
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Like GuitsBoy said above, it all depends on whether knock is detected and timing gets retarded. On an engine tuned for the lower octane, the lower octane gas will provide more power than the higher octane gas. The difference is insignificant in real world terms, but it's there.
Anybody know the exact numbers for combustion energy? I thought I remember them being in the 29,000-29,800 range. What units, I don't remember.
Anybody know the exact numbers for combustion energy? I thought I remember them being in the 29,000-29,800 range. What units, I don't remember.
01-04-2006, 11:51 AM
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I estimate that the use of acetone-spiked corn gas has improved my gas mileage by about 7%.
..this after six tankfulls... each tank had about 4 ounces of acetone... Home Depo loves me now....I am their best acetone customer...
..this after six tankfulls... each tank had about 4 ounces of acetone... Home Depo loves me now....I am their best acetone customer...
01-06-2006, 10:41 AM
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12-19-2010, 04:58 PM
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Some guys i used to build engines with were talking about why the engines performed differently, and the only thing we could come up with is some engines are less efficient then others hence the reason one engine will see results and another will not.
Assuming thats is true then I guess the GM engines are just better then the fords lol. they are already as efficient as they can be lol.
No matter what you think about this stuff I can say that it did help my motors run more smooth. As I understand it, acetone breaks the surface tension in gasoline, which causes better atomization and inturn closer to 100% burn in the cylinder which would be why you would see more power, and more fuel economy. Think of the little spider walking on the water, then you add acetone and he cant walk on water no more lol. But propane in the PCV valve will do the same thing and because its a gas it will burn even more efficiently.
If your not sure, just try some out, it wont hurt the seals( its not concentrated enough to do so). But when you add it to your tank, open your hood and have your engine running, and listen to the sound of it. it will change within a few seconds of it mixing in. The engine quiets down alot.
I dont use it anymore since my escort is sold. My truck is sold and now I have more efficient GM cars lol.
12-20-2010, 05:18 AM
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i know this, ive use it on cars that were running bad and it did miracles for the car , ive tried it on my prelude, and my jeep and it for sure cleaned up my injectors
01-05-2011, 05:19 AM
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Bumping this, I added it into my 94 5.7l TBI truck as I was getting shitty gas milage lately (13), I have already been through 2 tanks and am seeing about 40 more miles a tank. Seems to be working. I am going to add it into my wifes new Infiniti G37 as it as gets shitty MPG's but I drive the **** out of it. I am a believer.
01-16-2011, 03:25 PM
#75
My friend had an older (late 90's) TBI Chevy truck that the EGR wasn't working quite right and causing him to fail emissions. As a spur-of-the-moment thing, we put acetone in his gas, ran it for 15 mins and tried again and the sniffer reported a HUGE drop in everything!! He was failing in HC and NOx. While both decreased, he still failed on the NOx, but only marginally. The HC were almost zero!!! I can't report on any increases in power, but I have sniffer results that prove a BIG drop in emissions. I would never run it in my T/A just because I have no tuning software to monitor fuel trims, AFR, knock, or anything like that, but there is some solid evidence acetone is doing something to promote a cleaner, more complete burn.
