Automotive Fuel Hack

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Introduction: Automotive Fuel Hack

Improve mileage 2-3 MPG, both diesel and gas, smoother running and quicker accelleration. This was not my idea, however I felt this was the forum to share it with.

Step 1:

Purchase 100% pure Acetone and add to full tank of gas or diesel at the ratio of 2oz. per 10gal. of fuel. Do not use cheap plastic container as a refill container as it will melt. I bought a Cutex nail polish remover bottle (4oz), ran the contents through and reused the container.

Step 2:

Results 1997 Ranger 172K 3.0L V6 @ 3.75 oz per fill up= Went from a measley 17mpg to 19.34mpg! Additionally the truck has smoother accelleration and spark knocking has all but vanished completely. As I understand it, the acetone acts as an agent to help disperse the gasoline in the combustion chamber increasing amount of fuel actually burned vs. sending unspent fuel into the atmosphere. Any simple search terms including "acetone as a fuel additive" will yield many hits, some with much comparo data broken down by manufacturer.
*added benefit to diesel guys: reduction in smoke!

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49 Comments

Quick question - how does this effect the life of the CAT if at all??

The biggest help that I have ever seen is to use a high flow air filter such as te K&N; or similar. We went from 17 mpg to 26 in my wife's 1992 5th Ave. (I also removed all of the restrictive air-box and piping) I will try this suggestion to see if I can hit 30 mpg.

You can use no air filter for testing purposes when its rainning...

Anyone care to donate a car to science? Just try it for a month and then look at what the damage is. I'm a bit disappointed with the car talk guys, they didn't think to say that the acetone should never be poured in straight, but should always be pre-mixed. Doesn't matter if it works or not, they should advise pre-mixing for the curious. Maybe they were too caught up in the corporate mind-set after that talk they had with the oil engineer. The evaporation problem should be addressed as a potential error factor. If the acetone is evaporating back out of your gas tank before any meaningful mileage is racked-up, then you can't say what effect it would have on your mileage. I have used acetone, and I know it's gone fast! It would be neat if someone were to come up with an automatic mixer. That is, to add the acetone on demand shortly before the intake valves. That way, a proper estimate can be made. Cool points if it's plc controlled and in-line just before a fuel-rail! It might be better to test this out on a constant load engine, such as a generator. That would allow spraying the acetone on demand, like in a nitrous set-up. I think a real expert would be one of the fuel wizards out there on the drag-strip. Those guys who make it a regular practice to shave tenths of a second by mixing their own gas ought to know if acetone is worth any further research.

Only works on cold weather OR pressurized gas tanks... take your pick!

This trick does work, it can save on fuel, but at the cost of hardware. I tried this in my suv and it seemed to work, instead of around 8mpg city, I got a bit more, and highway from around 15 to 20mpg. The problem was that after about 6 months of doing this, one morning I went out to start my car and it just cranked and cranked but did not fire. popped the hood, pulled the aircleaner and sure enough the TBI unit was dry as a bone. It could have been that the suv was about 13 years old at the time, but sure enough the fuel pump was dead. I didn't use this trick again and my suv is still running today. But after a $200.00 new fuel pump.

Yes plastic parts in fuel pumps go the way of the DoDo with industrial solvents... maybe there are all metal OR solvent ready ones!? IDONOW

the service ppl ripped you off with the pump while mine replaces a lot of stuff including fuel pump for $170

two super easy 'hacks' to increase fuel efficiency. Pump your tires to 1-2 psi over the suggested pressure (usually found on the drivers sill/door) and change your airfilter every 30K, or take it out a vac it clean if you're super cheeep.

Increasing your tire pressure (within reason) will reduce the rolling resistence - thus improving your fuel efficiency. However, it does that by reducing the amount of tread that comes in contact with the road - the tire "bulges" more in the centre od its width - and increases the wear on the centre of te tread.

This means that the centre of the tread wears more quickly and you will need to replace tires more often - it's a trade-off - fuel or tires.