Curious if anyone's tried to add acetone into their fuel? It's alleged (in very small quantities like 3 oz per 10 gallons) to allow gas to vaporize more completely.

 

A guy on the miatapower list tried in his Ford Tempo and noticed no improvement in mileage (no change for that matter) and that was his goal.

 

They tried this out on Mythbusters and had no change either.

 

Now toulene... makes a great octane booster

 

Not wanting to use it as an octane booster. The idea is it allows fuel to vaporize better allowing for more complete combustion of the fuel. That translates into efficiency. The other benefit would be lower hydrocarbon emissions.

While the former is worthwhile, I'm wondering about the later. I have a car that just *barely* failed emissions due to high HC--and I'm having a hard time trying to fix the problem.

 

unplug the FMU next time you get checked

 

Different car. The miata breezed through.

 

ah. just kidding.

but this could be something as simple as a leaky injector