What a great idea!

So here’s the deal [from Pure Energy Systems]:

Complete vaporization of fuel is far from perfect in today’s cars and trucks. A certain amount of residual fuel in most engines remains liquid in the hot chamber. In order to be fully combusted, the fuel must be fully vaporized.

Surface tension presents an obstacle to vaporization. For instance the energy barrier from surface tension can sometimes force water to reach 300 degrees Fahrenheit before it vaporizes. Similarly with gasoline.

Acetone drastically reduces the surface tension. Most fuel molecules are sluggish with respect to their natural frequency. Acetone has an inherent molecular vibration that “stirs up” the fuel molecules, to break the surface tension. This results in a more complete vaporization with other factors remaining the same. More complete vaporization means less wasted fuel, hence the increased gas mileage from the increased thermal efficiency.

That excess fuel was formerly wasted past the rings or sent out the tailpipe but when mixed with acetone it gets burned, though the engine still thinks it is running straight gas.

Acetone allows gasoline to behave more like the ideal automotive fuel which is PROPANE. The degree of improved mileage depends on how much unburned fuel you are presently wasting. You might gain 15 to 35-percent better economy from the use of acetone. Sometimes even more.

I have not been doing it enough to have averages, however I do have numbers for both non-acetone and an acetone-mixture, both runs were done with the same car on the same route.

The Constants:
Car: 2003 Chevrolet Cavalier
Engine: 2.2L Ecotec I4
Fuel: 87 Octane
Conditions: Cruising speed: 70-75mph, Humidity: around 70%, Temp: 75-95 degrees, Cruising RPM: 2600-3000

The test runs were done during a trip I am currently on which takes me from Maryland to Wisconsin through the turnpikes on I-80/76. The non-acetone run was recorded on the westbound route and the acetone-mix route was recorded on the return eastbound trip.

Non-Acetone Run:
- Made between Frederick, MD and Toledo, OH
- Fuel: 87 Octane/Sunoco
- Miles Driven on tank: 393.7
- Gallons Consumed: 13.427
- MPG: 29.32
- Cost/Mile: $0.1016 (10 cents)

Acetone-Gas Mix Run:
- Made between Madison, WI and Sandusky, OH (including Chicago rush hour stop/go traffic)
- Fuel: 87 Octane/BP w/2.2oz sunnyside 100% acetone added
- Miles Driven on tank: 411.8
- Gallons Consumed: 11.023
- MPG: 37.36
- Cost/Mile: $0.0813 (8 cents)

Preliminary testing (albeit very crude so far) has shown a increase of 8 more MPG on the acetone tank, as well as a slight noticeable increase in performance.

I’ll post more when I have better data, but so far it looks like this may be the secret the oil companies don’t want you to know; time will tell. There’s many things to check into including any adverse effects on the engine, injectors and a/f ratio; I’ve heard the acetone mix may make the a/f a bit lean which could be a bit concerning.

As always, take this info with a grain of salt. I’m far from a scientist and I for sure don’t know what I’m doing yet