http://www.metacafe.com/watch/524517/double_your_gas_mileage_2x/

Many people are saying adding a small amount of acetone, 2-3oz per 10 gallons of gas, will increase your gas millage.

People have seen increases from 1-16 mpg on various forms i have read. Many of the people having higher results are those people who drive older cars while those with newer more modern cars see less if no results.

People also say there is a risk while using acetone that it will burn through your plastic fuel lines and destroy things like your fuel pump.

Seeing that our Camaros are feeling the age a little bit it might just work, and it might just work well. Just wanted to discuse if we have any plastic fuel components, such as fuel lines and what not, the acetone might burn through or other harmful effects it might do to our cars. Also if anyone has tried this please post up your results!!!!

If you do try this only use between 1-3 oz of acetone per 10 gallons of gasoline. Anymore and results show that it actually lowers your gas millage. Also you have to make sure to use 100% pure acetone with no additives of any sort... make sure to look closely.

 

Mythbusters proved it busted.

 

F**k!

Just use gasoline!!!!

 

They put to much acetone in which ended up giving the opposite effects.

 

Keep dreaming. Molecule per molecule, acetone contains less energy than gasoline. It doesn't work. It can't work. There's no big three cover-up. No government conspiracy. No turning lead into gold. Move on to something else.

 

Exactly, plus over time it will possibly eat non-compatible rubber components in the fuel system.

If you want MPG on an EFI setup, the best bang for the buck you can do is buy the equipment and get into DIY tuning. Also make sure you have a newer AC Delco heated O2 sensor, its easy to convert to them and the benifits are well worth it. Its nice to be in closed loop 15-30 seconds after a cold start. Closed loop is usually delayed up to 180 seconds by the ECM on a COLD engine. Worse yet, TPI engines have a screwy startup spark advance routine that keeps the ECM from advancing the timing until a certain coolant temp is reached(I have seen mostly 44*F or 102.5*F). This, along with a raised idle speed, richer fuel mixture, and air being pumped into the exhaust manifolds, helps warm the cat up to temperature quicker. Its the EATS fuel routine though. I saw my around town mileage come up 2 mpg when I got rid of this routine in my van. TBI engines have a very similar routine as well. There are many other tweaks that can be made, that will allow your car to run and drive better, allowing you to get better fuel mileage.

Driving sensibly, I just got 18 mpg from a 350 TPI Vortec that is making 290 RWHP and 350 RWTQ and thats a fullsize van in 33% City/66% highway driving. Highway mileage is the 8 mile trip on the freeway to work @ 70-80 mph. City is the 2 miles to the highway from my house and the 2 miles after I exit till I get to work. There are 4 traffic lights and a morning 20 mph school zone as well. I drive 24 miles round trip everyday and use 1.33 gallons a day. I have a 34 gallon tank, one tank usually takes me 600 miles, and I have once gone, 1 month without fueling (had a 305 TPI w/TBI heads at the time).

 

Tried it with my FI 3.1 and it made no difference at all.
It may have some benefit on a carbed application where it can help with atomization of the fuel, but that would be about it.

 

Do a search on this forum. This goofy topic comes up every few years and gets shot down with some chemistry/common sense every time.

 

The theory is it reduces the surface tension of gasoline, letting it atomize better, resulting in a better burn, less emissions, more efficient. I read an article about it a year ago, and tried it in my truck. I used a mpg gauge I had bought just for the purpose. I may have seen an increase of 1 or 2 mpg, I don't know, the experiment wasn't controlled enough. The small amount won't hurt anything in your fuel system.

I think acetone may already be in gasoline? Anyway I'm not interested in it anymore. If you want to increase mileage, buy a diesel. Diesel is the way.