i have been adding acetone to my gas for over a year, and it has increased my mileage and throttle response.
DONT USE WITH GAS CONTAINING ETHANOL OR YOU WILL GET WORSE MILEAGE AND POTENTIAL ENGINE DAMAGE.
that said, you add it at 0.23% by volume, and it changes the surface tension of the gasoline allowing better atomization. works for fuel injected engines not carbureated engines.
do NOT add more than 0.25% by volume, as it begins to effect the combustion process at this point by reducing the combustability of the gas. lower than 0.20% doesnt change the surface tension enough. if you have a higher compression engine (like 10:1 and up) then adding a bit more acetone (.01% for every +1:1 increase in compression) will not negatively effect the combusion process.
the concentration is too low to effect the rubber components in the fuel system, and also low enough that the cost of the acetone vs the benefit makes it very worth it. my city mpg goes up about .5 (3%) but my highway mpg is between 31-40 (thats reaaaaly good), and my combined average was 20% higher than prior, although it has dropped to 10% with the increased use of S4 this summer.
it costs $1 for 4oz of acetone, which is how much i use for 13gal of gas (0.24% max), at $3 a gallon = $39.. therefore, i would need a 1/39 improvement in mileage to justify the use of it, which is 2.6%, well within the limit for its continued use. and if not for the mileage increase, then for the cleanliness of the injector heads, and the funky exhaust smell.
it works best when used with either lucas upper cylinder lube or FP60, or some other lubricating substance that increases combusion temp. the effect is synergistic, providing better engine efficiency than either would allow alone.
old school moth balls are highly oxygenated and make the car perform like it has a supercharger. that however is best suited to carbuerated cars, unless you increase the amount slowly so that the ECU can figure out wtf is going on.
Alusil, Dinan DME | ITG Air Filter | Eibach/Bilstein HD | 26/20 Swaybars | Iridium plugs | Depo/ProLumen HID | Optima batt. | no AC | Stoptech brake lines, Frozen rotors, brass bushings, Superblue