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I gotta disagree, and state the opposite. It allows those who P&G with hard throttling up to speed to see even greater results. But you have to have a newer o2 to go with its use(less than 30k). And anyone who has a heavy foot will also see better fuel mileage.

Quote:

Originally Posted by JanGeo (Post 23845)

Hey I get 32mpg if I drive 80 on the highway with acetone - it doesn't help when you are burning it at 2.5 gallons an hour - it helps when you are burning 0.3 to 0.5 gallons per hour by making the injectors work better at low volume operation when they usually don't atomize the fuel properly.

Quote:

Originally Posted by Coyote X (Post 24798)

I ran acetone for 4 months straight 3oz/10 gal ratio. My mpg did increase over 3 tanks 2-3mpg. I used up the small amount I had and never bothered getting any more after I ran out. The mpg never went down from not using it over the next 10 or so tanks of gas. I would say the acetone is a good injector and fuel system cleaner so it can help clean out the system and get it running properly. But once the fuel system is clean it doesn't help improve mileage over that. So I plan on picking up another quart of acetone and using it occasionally to help keep the fuel system clean but other than that I don't see it helping much.

that it does. and sometimes i think people get the placebo effect:p

i run half a can of seafoam thru the engine and the rest in the gas every oil change:thumbup:

I use 3 parts acetone, 1 part xylene, and 1 part lucas oil upper cylinder lubricant. I saw a 12% gain in the summer but little or no gain in the winter. I add 3 ozs of mixture to 10 gallons of gas. Works best in warmer conditions. Also really cleans out injectors and fuel system. My 2004 toyota matrix has 280, 000 miles and runs like it did at 60k.

2 Test vehicles on round 1300 mile round trip. 1 2004 Toyota Camry V-6, 1 2001 Toyota Solara V-6. Both cars driven in tandem. Average highway speed 78 MPH using cruise control as often as practical. On the trip away from home the camry averaged 29.9 mpg, the Solara averaged 24 mpg. Both cars used 93 octane round trip. On the way home both vehicles used 3 oz acetone per 10 gal gasoline. The mileage home was 33.5 MPG camry, 27 MPG Solara. We only bought fuel at name brand gas stations which are less likely to already contain tons of oxygenates etc. in their fuel.

Our 98 explorer gets about 2 mpg increase as well.

my 88 cressida had no appreciable results trend. I tried with everywhere from .5-4 oz/g

My Jeep showed no change in FE, just a better idle. I tried 2oz/10g and 4oz/10g

My '93 Mazda MX-3 GS's both get about 3 more mpg with 2 3/4 oz. Acetone per 10 gal. gas. The one with a 1.8L V6 has had this added for over 2 years, and when I forget, or can't, it goes back down 3 mpg. the one with a 2.5L high compression (210 psi) engine got 30 mpg on 89 octane (1 mpg more than good 92 octane).

I've tried acetone in both Wile-E and Marvin... I was doing alternate tanks on and off, ABABA.... on Wile-E I was getting some variation, but it was hard to tell if it was significant, my high tanks seemed to be a little higher and my lows didn't seem as low. On Marvin, I was getting more of a definite gain, 1-2mpg better. Which is a bigger gain around the 20mpg level than the 30mpg level. I kinda got out of using it because it was too much of a PITA for marginal gain on Wile-E and I had Marvin laid up..... then haven't gone back to it on Marvin, since his rings aren't the tightest in the world any more and began to be worried about it affecting the oil. So it seemed to do a best of 10% or so on Marvin, but Wile-E's figures seemed to suggest it was getting 5% or less.

I understand the comment about "driving to save" with it though. Wile-E, one has to drive fairly hard anyway, due to limited power, and speed required to merge safely, Marvin has power to spare, but you have to spare it to save gas. In both vehicles, it subjectively ran smoother and more responsively, when that happens one does have to be careful not to "have fun" and just accelerate excessively for the hell of it. Meaning that as with some other gas saving tips, it's also a potential performance gainer, and it works as long as you use it wisely and don't succumb to the power of the dark side.... even if they have cookies.

I tried it in my 97 F250HD with no real increase in mpg. I tried various mixes and logged them all in excel to try to narrow down what mix worked best. I just gave it up cause I got tired of adding mixes to the tank. I think ford's EEC-IV cpu fights any mpg increase I try. The only guaranteed (fuel related) mpg boost that works for me is using 100% gasoline and not 10% ethanol. Thats worth 2 to 3 mpg in my truck.

Yeah, same core ECU in Wile-E the Escort there. If I don't pick up MPG when the modded head goes back on it, then I'll start messing around with biasing the MAF a little to see if it's foolable.