Not sure if this has cropped up before as I'm new to the forum. I've done a search for *acetone* on the forum but nothing relevant comes up. Some years ago I read an article about using acetone as a fuel additive in both petrol and diesel fuels to increse M.P.G.

I first tried adding acetone to my diesel Peugeot 405 and increased my m.p.g from 55 mpg to 62 mpg. Later, six years ago I bought a new diesel Punto Multijet and used acetone from day one. I rarely got less then 80 + mpg and the lowest recorded while using acetone was 76 mpg but for some reason that was a strictly one off. Now I hear you say, 'you never got a baseline to see what the Punto would do without acetone.' About three years ago I took the step to omit the additive for a couple of tanks as I was quite curious myself, and wasn't too surprised to discover my mpg drop suddenly to the mid seventies. On adding the acetone again the mpg shifted back up to to low eighties! I have only sold the car this last week and with 125,000 + on the clock there was never a peep out of the engine or fuel system in general, not behaving itself!

At the time of my reading the acetone article there were all sorts of horror stories that the acetone would dissolve the rubber seals in the fuel system then one would possibly be in costly trouble. It turns out rubber is NOT used in the fuel systems of modern cars and the type of plastics to make these modern seals are totally impervious to acetone.

I haven't tried it in my Greenline 1.2 Fabia Hatch yet as I intend to get a baseline first this time. In another thread a poster suggested I need three or four tanks before the engine settles in, and then my mpg shold rise very nicely anyway. I hope so as mpg has been rather disappointing so far! Also in another thread I asked how accurate the onboard computer was in their cars. Came back with a mixed bag but thanks all. Just for the record, I filled up for the third time today so have two brim to brim recordings so far. First was 72 while the computer showed 72.2, so not bad on that one. The second recording was 73.3 while the computer showed 74.3 so again pleased the computer is fairly accurate but still disappointed at the mpg overall! This is of course based on the claimed figures of 83.1 M.P.G. for the combined mileage for my model. I'd be glad if anyone could say when in their experience they reached better/best mpg with their new cars.

Here is a link to an acetone article http://pesn.com/2005/03/17/6900069_Acetone/

For the sake of brevity, acetone is added at two ounces to 40 litres of diesel. Or for the metric minded 60 mils of acetone to 40 litres. For the petrol engines, for some reason the acetone amount is double that of a diesl engine. Four ounces or 120 mils for every 40 litres of fuel. When filling up by the way I always calculated the pro rota amount of additive depending on just how much top up fuel into the tank. Acetone can damage your paintwork so it's best to add the stuff through a plastic syringe. Yes, plastic and with a 'rubber' seal and no problems with that either after eight years of use! I bought one from Ebay, 60 mil as it happens for about a pound. Acetone too can be bought from Ebay at about £15 a gallon. Yes rather a lot so will last you for ever!

There's lots more articles and Utube videos if you care to punch in *acetone in fuel*.

So there we are folks, the planet got a little greener today, perhaps?

Happy economising.

greenline 11

Does your car smell like pear drops??

On a serious note, read a lot about this over the years, but wouldn't like to try it...