Miracle for fuel economy?

[flat_black]

High EGT's can cause a cat to break up, but LOW EGT's can cause it to clog. Basically, it has to be hot enough for the cat to light off, to allow the catalytic reaction to take place, but not so hot that it shatters or overheats and cooks and/or cracks the cat, so it no longer heats up properly or evenly.

Honestly, I don't think it'll be an issue, just looking at the results thus far.

On a side note, I have someone with an emissions tester giving me a hand (In a different location, so he's going to get back to me with the results), and I should have a measurement of the differences in emissions by this evening.

 

[jrodhotrod]

Excellent...

Yes, so it looks as though this has very little effect on EGT so the CAT should be fine, alleviating one concern.

Looking forward to the emissions results

 

[1sty]

So whats are target mixture again?
Is it still 3 onces of Acetone per 10 gallons of gasoline?

 

[Rainman]

Just got my container of Acetone from Home Depot (4L for $24CAN). Put 40 ml in my tank when I filled up this afternoon. Prices haven't gone up here yet, but I am sure that after supper they will be right up there. Locally, prices are now $0.975/L for regular (I paid $1.087/L for 91), but they are expected to rise to $1.75CAN/L this evening.

I have been keeping track of my mileage for a while so I will have something to compare against. Recently, I have been getting 340-380 km/tank driving moderately aggresively so we will see whether the acetone makes a tangible difference.

R

 

[flat_black]

%0.2 Acetone
%99.8 Gasoline

That's about 3 oz to the 10 gallons, yeah.

 

[Spooled]

Just got my container of Acetone from Home Depot (4L for $24CAN). Put 40 ml in my tank when I filled up this afternoon. Prices haven't gone up here yet, but I am sure that after supper they will be right up there. Locally, prices are now $0.975/L for regular (I paid $1.087/L for 91), but they are expected to rise to $1.75CAN/L this evening.

I have been keeping track of my mileage for a while so I will have something to compare against. Recently, I have been getting 340-380 km/tank driving moderately aggresively so we will see whether the acetone makes a tangible difference.

R

Translation:
He's paying $3.15US / gallon ($3.51US for 91) currently
He will be paying $5.66 tonight
He gets 211-236 miles per tank (16-18mpg) assuming 13 gallon span between fill-ups

Suddenly I don't feel so bad about US gas prices. Did I do that correctly?

 

[1sty]

OK, so thats 210 ml per 15 gallons?

 

[flat_black]

Woah, 210ml is a LOT... That's a little over 7oz. You want more like 130ml per 15 gallons, which is about 4.5oz.

 

[1sty]

I knew I was screwing the little dog on that one.
Thanks

 

[FlyinMSP]

OK, so thats 210 ml per 15 gallons?

15 gallons need 132.8 Ml of Acetone

 

[Pheonix]

i'm tempted to try this now,
damn Eddie, i take it Cali is treating you well, you are the man.

i won't be commuting much anymore but if i have to fill up less, then sweet

 

[Rainman]

46L = 12.15 gallon
.0975/L = approx $3.70/gallon regular
1.087/L = approx $4.12/gallon premium
1.775/L = approx $6.63/gallon regular expected tonight

40 ml = 1.35oz (1:1000 dilution)
3oz = 88.7 ml (20:1000 dilution in 10 gallons)
When I re-read the article, a 1:3000 to 1:5000 dilution is suggested, which they suggest is approx .78cc per L. This is 36 ml per 46L tank. This is almost a 1:1000 dilution. Next tank I'll halve the amount so that I end with a 1:2000 dilution or so.

After only 10 km with the acetone added I can't say that there is a major change yet. But I'll keep ya posted.

R

 

[hoindawall]

sub

 

[flat_black]

And here are the results, as taken from a 1996 Buick powered by a 3.8L V6. This guy was fast as hell with getting me the results! I guess the idea must have really interested him. Hehee. As you can see, there's actually a rather huge drop in emissions. So, this is the car test, and I'll let you know what the "lab" test results are, once I figure out a good way to do so. Enjoy!

Gasoline (91 oct, Chevron, Cali) [g/mi]:
CO: 0.7
HC: 4.0
NOx: 3.0

Gasoline (87 oct, Chevron, Cali) [g/mi]:
CO: 0.7
HC: 4.1
NOx: 3.2

~99.8% Gasoline (91) + ~.2% Acetone [g/mi]:
CO: 0.1
HC: 2.2
NOx: 2.7

~99.8% Gasoline (87) + ~.2% Acetone [g/mi]:
CO: 0.1
HC: 2.4
NOx: 2.9

 

[slug420]

ogmtju

 

[Vampyre]

i put 4 oz of acetone in my tank and so far i have got the same miles that i usually get in the first quarter and my needle is still on full...woohoo seems like it is better to me

 

[Kooldino]

flat_black - badass!

 

[peepsalot]

Is there some scientific method of testing the surface tension of a solution.

And does lower surface tension necessarily mean finer droplets?

It would be cool to take high speed pics of two identical injectors spraying, one with acetone in the fuel, one regular.

 

[flat_black]

Tensiometers are used for testing surface tension over a solution, but are rather expensive. Though I'm sure a lab would let you use one, if you were on good enough terms therewith.

Lower surface tension means that larger bodies of molecules are less likely to form due to the fact that the surface tension isn't high enough to promote large sized droplets. The larger the size, the more surface tension you need in order to keep it stable.

Sorry if that was confusing at all, it's Friday, and Friday is beer-day at work. Heh.

 

[FlyinMSP]

Acetone = badass! Not only there are fuel savings but the car runs better as well. The little hesitation I had is GONE for good! That beats an expensive fuel management system that would be needed for similar results. The car now runs so smooth, it hardly backfires at all, has very little soot on the exhaust pipe and all the power is still there (maybe even more). And, as emissions are lower (sun) (thanks to flat_black's report), what more can you ask!!? I'm on my second tank and so far, so cool!
Oh, I forget to mention that it costs me only 2 (Canadian) per liter