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You are here: > News > June 13, 2005

Semi-Trailer Truck Mileage Increases 4% with Acetone Added to Fuel

Adding 2 oz of acetone per 10 gallons of diesel fuel gave a modest increase in mileage.

by Sterling D. Allan
Pure Energy Systems News
Copyright © 2005

1999 Volvo VNL w/12 Liter Detroit Diesel, Series 60 Engine
(Note: STOCK Picture of make/model truck. Not actual truck)

CHICAGO, IL, USA -- After a month and a half of testing over thousands of miles in his semi-trailer truck, Brian Sizemore has released his results showing a modest increase in mileage by adding a small portion of acetone to his diesel fuel.

Allegedly, acetone decreases the surface tension of fuel and enables a more complete burn, increasing the mileage and performance; and has not been shown to have any damaging effects on the robust fuel line components of the engine. (Ref. 1, Ref. 2)

Using an approximate ratio of 2 ounces of acetone per ten gallons of fuel, Sizemore's mileage went from 6.72 mpg to 7.02 mpg, an increase of 4%.  Sizemore drove 4,154 miles on 618.6 gallons of diesel fuel without acetone, from April 5 to April 15, 2005.  Then, from April 18 to May 20, he drove 12,452 miles on 1773.8 gallons of diesel fuel with acetone added. (See data.)

The 342 ounces (2.7 gallons) of total acetone added over the 12,452 miles cost Sizemore around $35 (estimate from Home Depot quote: $12.97/gallon).   Meanwhile, his fuel savings over that same distance came to $166, bringing his net savings to $131.

Radio talk show host and truck driver, James Aurthur Jancik, an associate of Sizemore, has seen higher mileage improvements -- between 6% and 7% increase -- in his semi trailer truck, with the same concentration of acetone added. (Ref)  A primary difference is the age of their trucks. Jancik's truck is older and its engine is not as efficient to begin with, so the improvements in fuel combustion that acetone provides are more marked in his case. Also, James says his loads are usually a lot heavier, and he drives slower.  Both of these factors contribute to explaining why there is such a difference in gain from adding acetone to their fuel.

Sizemore's results are particularly noteworthy for several reasons.  First, his route is the same each day, as he delivers for the U.S. Postal Service.  Second, before adding acetone, he documented eight days of driving without, to give an accurate control comparison -- a step often overlooked by individuals testing mileage enhancement claims.  Third, he fuels up at the same gas stations, reducing fluctuations that might be introduced from variations in fuel brands. 

Significant variables outside his control included load size; varying from full to empty; weather and temperature fluctuations; and traffic conditions.

Of course the ideal test would be a bench-top-mounted engine attached to a high-precision dynamometer, with highly accurate fuel tank and exhaust measurement systems. Such a in vitro testing is reportedly being run by another party to check effects of acetone in a regular gasoline engine, and those results should be forthcoming.

Meanwhile, all things considered, Sizemore's results for his semi truck do approach a basic level of "scientific" when it comes to an in vivo study for fuel economy.

The curve generated by Louis LaPointe, who is a long-time proponent and investigator of adding acetone to fuel, would suggest that the optimal ratio of acetone to fuel would be 1.5 ounces per 10 gallons.  See line D in the following chart.

According to this graph, considering cost of acetone versus return in fuel economy, the optimal concentration of acetone in a diesel engine would be around 1.5 oz acetone per 10 gallons diesel.  A follow-up experiment, therefore, would be to try that concentration, then to try 2 oz acetone / 10 gallons in yet another experiment.

# # #


NOTE: To calculate the total acetone used in this experiment, we counted the first amount as 8.5 oz per tank, rather than the 58 oz required to bring both tanks up to a concentration of 2 oz / 10 gallons.  Including that initial amount increases the tally of the cost of acetone even more than cited above.


Sizemore data furnished by James Arthur Jancik.  James hosts our weekly "This Week in Free Energy™" show.

See also

Page composed by Sterling D. Allan June 13, 2005
Last updated December 24, 2014





"It is harder to crack a prejudice than an atom." // "I'd rather be an optimist and a fool than a pessimist and right." -- Albert Einstein

ADVISORY: With any technology, you take a high risk to invest significant time or money unless (1) independent testing has thoroughly corroborated the technology, (2) the group involved has intellectual rights to the technology, and (3) the group has the ability to make a success of the endeavor.
All truth passes through three stages:
   First, it is ridiculed;
   Second, it is violently opposed; and
   Third, it is accepted as self-evident.

-- Arthur Schopenhauer (1788-1860)

    "When you're one step ahead
of the crowd you're a genius.
When you're two steps ahead,
you're a crackpot."

-- Rabbi Shlomo Riskin, (Feb. 1998)

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