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Additives That Improve Mileage


Try putting some Additives in your fuel. Sounds strange coming from me, but that is something you can do "Right Now" to start improving your motors fuel efficiency.

Auto makers, big business, and government do everything in their power to limit the efficiencies of our vehicles. We are stuck with a 14.7 to 1 air fuel ratio. That is the reason for our excess fuel consumption. We need leaner fuel; higher ratios of air; 16 - 20 is what Europe uses. Their vehicle computers allow it; ours do not. So what can you do about it?

Start by finding a good quality gasoline; one that does not contain alcohol. This may be a challenge but it is one worth seeking out. Alcohol has a slower burn rate than gasoline. When your fuel contains 10% alcohol, it is watered down so to speak. It is not as volatile. It will not produce as much energy when it burns. Your mileage will drop like a rock. Oh, but you paid less per gallon for it; that is a savings; Bull! You didn't save anything if your mileage dropped by 10 to 20 percent; and it will. It used to be that, major oil companies did not add alcohol to their fuel; now they do; and they do not necessarily have to tell you in most States. If you can find non-ethanol gasoline, they may charge a few cents more per gallon, but your vehicle will perform better and your mileage will benefit. So how do you know if alcohol is in the gasoline - if It does not have to be advertised on the pumps? Ask the station manager. If they do not know, chances are, it contains alcohol. Once you find a quality gasoline, it may take a few tanks to use up all of the existing alcohol content. Each time you add fuel, you are mixing it with old fuel (unless you run all of the old fuel out). Get in the habit of keeping track of your mileage. Write it down.

Try to use pumps that are on level ground. If the vehicle is pointing down hill, it will allow you to put more fuel in the tank. If it is pointing up hill, it will allow less fuel. Also consider the pumping speed. Try to pump the fuel at the same rate. When it clicks off, stop; don't add any more (for pumps that are good, not high pressure pumps). Find a pumping rate that you can relate to. I use a counting method. I try to pump a gallon every 10 seconds; that is 1/10th gallon every second. Pumping at the same rate, from the same pump is the best way I have found to track my local mileage. When I go on trips, I use BP, Citgo, Chevron, Marathon, and Exxon oil companies. I have heard that Texaco gasoline is good, and some Shell blends. If you have to pay more per gallon to get non alcohol fuel, do it.

Number one thing: Fool your computer by adding an EFIE circuit to your O2 sensor. Your O2 sensor reports any oxygen in your exhaust - to the computer. The computer says, ah, you need more gas, here it comes. The O2 sensor sends 0.450 millivolts to the ECM. An EFIE will let you add a little voltage to that reading so the computer will say, oh - you don't have enough oxygen, let me cut back on the gas for you. By doing this, you will lean out your fuel. You will be able to adjust the O2 sensor voltage up or down. Pre 1987 vehicles do not have O2 sensors, or computers; with few exceptions. Back then, most vehicles had carburetors. We could adjust the air ratio with them. Then fuel injection came along. It needed a computer to regulate fuel flow. That led to regulating oxygen content, timing, temperature, moisture content, atmospheric pressure. In other words, We got shafted into believing all of this regulating was good for us. Big laugh of the century. Fuel economy did not increase. If anything, it got worse.

Number two thing: Add Acetone and Xylene to your fuel; gasoline or diesel. Acetone changes the surface tension of the fuel. That makes it spray a finer mist. That will make it combust better. Better combustion means leaner fuel and more efficient burning. But if your fuel contains 10% Ethanol, acetone will not help much. Big oil figured that out. Xylene will help increase octane and help override the affects of alcohol in the fuel. Together they work best; but the higher the Ethanol content, the less effect acetone will have.

Number three thing: Add Mothballs made from Naphthalene. The old fashioned moth balls are 99.5 percent Naphthalene. The only kind to use. It takes an hour for them to dissolve, so you may want to crush them first. They will boost your mileage. Naphthalene is a hydrocarbon. Do not use more than 5 mothballs in 20 gallons. You don't want to carbonize your engine. Oh, and don't use mothballs if you are using Xylene. They do the same thing.

A friend of mine drives an El Camino, 305 V8 and gets about 30 mpg with all 3 of these additives. He even adds 50% diesel fuel, but he has a carbureted engine and a hot ignition system. I am not suggesting you can do that, but you can research it. I for one, add a quart or two of kerosene, now and then, to keep my fuel system cleaned out. It makes a difference. Did you know that kerosene is a lubricant? Actually, it is one of the best. It is used in the manufacturing of aluminum foil. Kerosene is actually a better fuel than gasoline. It contains 10% more BTU energy. It can be spark ignited like gasoline. They add it to diesel fuel during winter months to keep the fuel from gelling. Kerosene is another fuel you may want to research.

Another additive you can try is Water. That is right, good ole H2O. Water injectors have been used for years to improve fuel mileage and engine wear. Have you ever noticed how much smoother your engine runs on foggy, damp days? Did you know your engine burns water now? Have you ever noticed water dripping from the exhaust pipe of your vehicle? Did you know Ethanol contains nearly 5% water? Here is project I plan on building this spring: http://hho4free.com/fogger.html

One last tip: Find a gas station that does not have alcohol in their gasoline. You can't go by what is listed on the pumps. Alcohol has a slower combustion rate than gasoline. It is harder to ignite. It absorbs water. It will lower your gas mileage, so try to avoid ethanol fuel. The additive suggestions will work better if the fuel does not have alcohol in it. So find a good gasoline in your area before you start using additives.

Acetone & Xylene used as fuel additives

Learn more about these additives and how much to use.

Naphthalene Moth Balls used as a fuel additive

  Ester Supplements could help!  (under construction)

  Toluene: There are fuel additives such as Toluene, which are similar in their solvent action to Acetone, and are marketed specifically for their de-carbonization action.  Added in similarly small proportions, the instructions specify to NOT use these more than two to three times a year.  You add them to a tank of gas, they do their thing, and you don't add them again for a long time.
(under construction)

Articles of Interest


Kicker Performance Products - 10 ways to save gasoline.


Calculate the amount of additives needed after your fill up.
Here is an example of a container that can be carried in your vehicle to store and dispense your additives. It allows you to dispense 1/2 ounce to 1 ounce of liquid at a time. Squeeze the bottle and the liquid fills the chamber in the upper left corner of the bottle. CDC uses this container in the product for Lead Substitute.



It has been a Godsend that I happened to come across your site on YouTube. I have over the last year been looking into various ways to save hard earned money on fuel. I am as dumb as a box of rocks when it comes to tinkering with the components of any fuel injected system car. I have a 1995 Chrysler LHS, with a 3.5liter fuel injected engine. I, like the majority of hard working Americans, am tired of being held hostage by foreign and domestic over priced petroleum products. I would also like to say that I thought before visiting your site that this business of Hydrogen Powered cars was years away. You have shown me that with a little knowledge and the willingness to try a new approach to fueling my car, that in a small way I can contribute to healing the earth instead of contributing to her oblivion.
I have combined three out of the four additives you recommended. Before I used these additives I was getting an overall average of 13.00 MPG. Immediately after applying your suggested additives, I had to drive that moment to see if they improved my mileage. And as advertised I went up to an overall average of 22.00 MPG. I haven't even installed the COSM that I ordered from Madscientist. I am rambling on now so I just want to say may God Bless America Again.




Gasoline Gallon Equivalent - GGE

Gasoline gallon equivalent (GGE) or gasoline-equivalent gallon (GEG) is the amount of alternative fuel it takes to equal the energy content of one liquid gallon of gasoline. GGE allows consumers to compare the energy content of competing fuels against a commonly known fuel --- gasoline.




Gasoline (Regular Un-leaded) 1 US Gallon 114,100 BTU per gallon
Gasoline reformulated with Ethanol 1.019 Gallons 111,836 BTU per gallon
Diesel #2 0.88 US Gallon 129,500 BTU per gallon
Biodiesel (B100) 0.96 Gallons 118,300 BTU per gallon
Biodiesel (B20) 0.90 Gallons 127,250 BTU per gallon
Kerosene 0.90 US Gallon 128,100 BTU per gallon
Ethanol fuel(E100) 1.500 US Gallons 76,000 BTU per gallon
Ethanol fuel (E85) 1.39 US Gallons 81,800 BTU per gallon
Methanol fuel (M100) 2.01 US Gallons 56,800 BTU/gal (it takes twice as much Methanol to equal the BTU of gas)


Gasoline Ingredient concentrations:

Diesel Ingredient concentrations:

Kerosene Ingredient concentrations:

Other Fuels and their ingredients



    Copyright 2003   All rights reserved.   Revised: 01/29/16.                                             Web Author, daddyo44907
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