never mind nitrogen in tyres

[n brown]

what about acetone in fuel?

 

[fofeg101]

Milk is cheaper than road fuel, anyone know how to run an internal combustion engine on milk?

 

[fairytooth]

what about acetone in fuel?

Never mind acetone in fuel, what about alcohol in body? At the end of the journey of course !

 

[n brown]

yeah,but i'm serious,google it .has anyone tried it

 

[Deleted member 3011]

In all matters relating to fuel saving, this bloke seems to know what he is talking about.

Fuel saving gadgets - a professional engineer's view: Acetone

Case Study: Acetone as a fuel additive

Recently, the idea of adding small quantities of Acetone to fuel (mostly petrol (gasoline), but diesel has also been mentioned) has attracted a lot of interest. (At the time of writing, "acetone gasoline mileage" gets over 20 000 hits on Google.) Given this high profile, it seems worthy of some theoretical examination.


The theory, so far as I can tell, is that it enhances the vaporisation of the fuel and so reduces the fraction that is wasted by escaping unburnt out of the exhaust or past the piston rings. While I have no specific knowledge of the effect of acetone on fuel vaporisation, it is nonetheless very easy to demonstrate that it cannot give a useful benefit via this mechanism. It is very well known that the vaporisation of fuel in a modern engine under normal operating conditions is already very good, and only about 1 - 2% of the input fuel escapes unburnt. Hence, whatever the properties of acetone, it is extremely hard to see how the economy benefit can be more than this relatively small amount.

Unlike most who promote these ideas, this bloke has a few relevant qualifications.

He also states (the obvious)

Fuel consumption measured on the road is subject to so many confounding factors - traffic, journey type, driving style, weather, etc, etc - that it is very, very easy to see changes of 10%, 20% or even more, even when the true engine efficiency has not altered at all. This page considers the general risks in determining fuel consumption via uncontrolled on-road measurements rather than scientific testing. Some people have tried very hard to eliminate or compensate for the confounding factors, but in the end it is impossible to control them all outside of a proper testing laboratory.

http://www.fuelsaving.info/testimonial.htm is the page referred to above