My guess is, based on experience and intuition, that acetone mixed with gasoline will degrade the fuel lines faster than gas alone.  The acetone won't really be affected terribly in its destructive properties toward your hose by the gas other than to serve as a dilutent so it will be slower than pure acetone.  Why it does this I'm not exactly sure, but ketones are notorious for swelling polymers, leaching out plasticizers, things like that.  It may be doing some of these things.

It is true that a lower flash point fuel will improve fuel economy; this is why cheaper grade gasoline gives you better gas mileage--it's got a lower flash point.  However, you can also get 'pinging' in the engine--pre-ignition sparking coming from the gas igniting too early.  This isn't good for your car.  In addition, if you have a high-performance car, the compression in the cylinders REQUIRES a better grade fuel with a higher flash point to run correctly.

Also remember that acetone is about 5% water, something you don't want to put in your engine.  I doubt there is an interaction between acetone and gas that will damage your fuel lines, but you probably don't want to add acetone for the following reasons:

1. Pre-ignition of the fuel
2. Damage to fuel lines from normal acetone properties
3. Water in acetone condenses inside cylinders, or rusts out your gas tank
4. Ketones and other oxygen-bearing organics like ethanol have been known to produce carcinogenic incomplete combustion products in exhaust.

Steve & Company....

I have been experimenting with Acetone in over the road vehicles for 10 years now, and I have found that it actuall DOES increase gas milage by at least 20% when used in both carbuerated and fuel-injected engines.  I have gotten as much as 39.7% increase in the gas milage in my 93 GMC S15 Jimmy that has installed a 98 Vortec 5.7L 350 V8 motor.

Care needs to be taken when adding it to your fuel supply, though the precautions are not that dire.  Just do not let it sit on your skin for a long time.  Make sure it gets well mixed into the fuel tank(s).  I have not NO discernable degrading in either the stock fuel lines (GM in my case) or aftermarket fuel lines and hoses.  This is most likely because the ratio of Acetone Gasoline is very small (about a 640 to 1 mixture or about 0.15 % mixture +/- . very small indeed)

We are currently working on a marketable mixture of Acetone & other ingredients to make it more stable for DOT purposes so it can be made "salable" to the general public..  stay tuned.... the Oil companies will fight it tooth and nail, believe me.

Montana

Hello gwehe amd hmx91213

Thanks very much gwehe for the information.  I am going to give the acetone a try. I noticed that a lot of people on the Internet are talking about it now and what you are saying jives with what the lubedev website is saying.  I also saw that there is person who is bottling the straight acetone and selling it.

hmx91213...I wonder if the amount of acetone used, 3oz to 10 gallons of gas is so small, that 5% water is not going to be harmful?  The articles on this website do not mention 5% water as a problem when using acetone.

http://www.lubedev.com/smartgas/

Thanks again,

Steve R.

One wonder if Acetone will act like dry gas and therefore 5% water in the Acetone would not be an issue

What is the big problem with there being extra water?  

I built a water injection system for one of my cars.  It pumped high pressure water directly into the intake manifold.  Getting water in the engine isnt a big deal.  The pump I used was 100psi at 1.3gph.  The only problem with water in the engine is hydrolock which is not that easy to do.

In 100% acetone there is NO WATER.

I don't think these people are talking about acetone-water mixtures.  It's PURE acetone they're talking about.

However, I don't know if MPG is increased - might try it out though.

Isn't water vapor the most abundant gas in our atmosphere?
Even on a dry day in a dry climate there will be far more water passing through an engine from air than there could be from any miniscule amount that there might be in acetone or any other reasonably pure source of fuel. I was introduced to acetone as an indusrtial solvent/degreaser in 1978. I have great respect for it's volatility and an appreciation for it's power as a solvent. We dispensed it with plastic spray bottles like the ones we are familiar with for houseplants. It doesn't react with all plastics as readily as some may think. Some plastics will be ruined or dissolved instantly while others will be virtually unaffected. Of course the materials used in automobile fuel delivery systems are chosen for resistance to solvents as well as other factors. Just for S&G I have a small piece of 3/8" reinforced fuel line hose and a piece of 1/4" neoprene hose soaking in straight acetone to see how it may be affected. I had no reservations about trying a 640:1 ratio. I added 3 ounces of acetone to a full tank of gasoline (15 gallons) on Monday, (5 days ago). I can't speak for mileage yet, but engine "ping" was completely eliminated the first day. Other than "ping", performance isn't noticeably better, but it certainly isn't suffering either. (I'm running a 1987 Buick Century with the 2.5 litre "Iron Duke" 4 cylinder, 223000 original miles, I don't really expect much other than dependability.) My around town mileage has been constantly between 23.4 - 23.8 MPG, slightly less in winter. I've been keeping track of my gas mileage as long as I've been driving, if there's a difference I should see it with the first tank of gas, but I won't be convinced until I see repeated results. I'll report any increase or decrease, but it might be a while, I only put on about 75 - 100 miles per week.
  :beer: