First impression: the 94 Cadillac northstar (with 10.5/1 compression) likes it .
One full tank of 87 octane gas with ~5 oz acetone.
It's too early to tell if gas mileage is any better, but the octane enhancement is noticable.
Under hard acceleration I get no supplemental spark retard. It runs like it was on 93 octane.

 

A few comments on the above:
Warm fuel mixed with warm air will yield better gas mileage.
Cold fuel mixed with cold air will yield more power.
You can't have both at the same time, so pick which way you want to go.

The tune-up tips in the video help both power & mileage

The discussion of BTU's per gallon misses the point.
Running a vehicle is not about MPG.
It's about $/mile times the subjective fun factor.

 

It's about $/mile times the subjective fun factor.QUOTE:
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I agree. I'm after the fun factor more than anything else. The Acetone might contribute with better throttle response and higher octane performance with regular gas. That would be nice.

 

I've been putting beauty-shop-grade acetone into my '94 MPV for the last few tanks, 2oz per 10 gallons. I stopped for a week and started again, but that one week i stopped, it hit around 105 here, so the fan clutch was engaged most of the time.

I haven't driven consistently (all city or all highway) enough to get accurate results, though I have noticed the van has a bit more scoot to it.

 

They tested it on Mythbusters and came to the conclusion that it's BS.

 

Lube Control FP60 - cleans your fuel system and may improve your mileage.

 

wow you can double your gas mileage two times? So are you quadrupling your mileage or just doubling it twice and then it's the same after third and subsequent times?

 

I think I'll just stick to being a coward on this subject, and let someone else try it first.

 

I think the video might have been a joke...

 

My friend Jim started using it in his BMW a couple of months ago and swears by it. I've found a few people that claim it works. I actually can't draw any conclusions from them though as many of them decided to try this at the same time they did an oil change and other routine maintenance. The only true way to find out if it works for you or not is to drive around normally on several tanks of gas and keep track of your mileage. Then try the Acetone and again drive around with it for several tank fulls and again check your mileage. One tank isn't conclusive.

I've seen other people that have tried it that haven't noticed anything. I'm curious to see if there is a correlation with cars that are older working better. I have a hunch that Acetone is working like a fuel system cleaner in older cars rather than a power booster.

I reserve judgement on it as there are those who claim it does and doesn't work. I think we really need to have proper mileage records before and after it's use over several tanks each and even then not in conjunction with any other maintenance to the car. Then we need to see it's effects over several different types of cars. Only then can we definitively start to draw any conclusions. Until then I'm not going to run it anymore. I tried it once each on both my 1st gen RX-7 and my Honda and neither car changed in any way at all. Then again again I should have tried it over several tankfuls but no change at all isn't a good early sign of success. If I had gotten higher numbers with the Acetone I probably would have tried it again. I didn't.

Anyone else can try it if they are curious. It's cheap to try which is nice. You never know. I've seen dumber things work. Just don't mess with fuel system magnets or intake vortex devices.

 

That video actually proves that proper maintenance increases gas mileage. That part is true. He drives a Honda and for one of those to get 17 mpg, something is very wrong. He got up to 24 mpg just by using synthetic oil, inflated his tires properly, changes his air filter, lightened the car, shut it off at lights, etc. Even that is a 7 mpg increase which I know he can improve it but on the other hand maybe that's what the car is supposed to get and it was running really crappy which is why he got such good gains from a tune up.

The part about adding 2 oz of Acetone to 10 gallons to give a further 10 mpg increase I'm just going to call bs on right now. IF there is a gain from it, expect a small one. 10 mpg more is gigantic and completely unreasonable. Did he go on a cross country freeway trip after that and all of his other driving being in city traffic? He doesn't tell us about his driving details does he? I can mess with numbers too.

 

there might be something to it... and some of the stuff mentioned does work but I think it's a bit of a joke on other things that claim to increase mileage... though maybe it's the cat jumping out of the trunk when opened that's throwing me off... might have been serious lol

 

Acetone will disolve the rubber it touches, just like kartweb said.

Its probably one of the big no-nos to avoid mixing in a streetcar, simply because of its tendency to melt the fuel lines.

As for its ability to improve gas mileage. Who knows. But in my racing beat race flash thread i touched on the riskyness of adding crap to your tank. Yes, anything you buy from a hardware store or nail salon could be tainted with heavy metals which will eventually bind to your oxygen sensors and render them useless.

 

its probably just cleaning the fuel injectors and valves. There are safer alternatives than acetone for that.