I have used acetone (1 oz/10 gal gas) for 4 months shifting my gas mileage from 15 mpg to 18+ with better faster performance.

My fuel pump needed replacement last week, but my 3.9l Dodge Dakota has 200K miles on it too. The fuel pump did not look real bad, except it looked like tiny black rubber minute deposits in can it was put into on bottom in gas. This could be from a black gasket, the 22 gallon gas tank is black plastic, or ???

I am definitely going to get MMM to lubricate my injectors.

But my question is would the combo of MMM and acetone be a good long term combination? Its hard to know what Chinese materials are being replaced in auto parts, so it would be hard to be sure. I have no evidence the acetone did my fuel pump in, but it has to be suspect for sure. I will miss my efficiency and mild turbo power though, so am looking for an alternative.

THANKS!!

I understand your rational for using an oxygenated solvent to get better mileage. Unfortunately I disagree with the use of acetone. Acetone is a oxygen containing ketone and is very reactive with certain plastics, nitrile, and butyl rubber. 

The problem with today’s vehicles are that there are multiple plastic and rubber components that make up the fuel system.  Even small doses of acetone will soften and swell plastic and rubber components over time.  Acetone has great solvency and would be an excellent gum /varnish remover.  Unfortunately, acetone will also weaken the materials and can lead them to premature failure. It is hard to say if the fuel pump was affected by acetone or did it just fail from extended use. A vehicle with 200,000 miles will definitely have some wear and tear on moving parts.

Most gasoline does contain ethanol which acts as a oxygenate for improved combustion, so there is no need for an additional oxygen additive.  I would use Marvel Mystery Oil in the gas to provide internal fuel system lubrication and provide varnish deposit control.  I would add MMO to the oil for sludge control and improved lubrication.  If your vehicle is prone to injector deposits, I would supplement this regimen once every six months by using a TOTAL FUEL SYSTEM CLEANER OR TREATMENT additive. These fuel system treatments contain P.E.A., (Polyether amine) a combustion deposit control additive, to clean intake valves and injectors with regular driving and within use of one tank of fuel.  The fuel system treatment should improve your mileage as well.  Hope this helps!

I have come to the same conclusion. I just went to Walmart to get MMO, injector cleaner, and well known injector cleaner/lubricant/gas treatment. I will do the injector cleaner periodically, but will mix a cocktail of the MMO and treatment. I figure something like 2/2 ox per 10 gallons gas until I find the right optimal mixture. I’ll probably start off at 1/2 brand cleaner and MMO. Whatever gives me the best gas mileage, bingo! And MMO is so attractively priced too, so I’ll lean towards using more MMO in the formula.

My setup for acetone was with an army ammo can bolted in my bed like a behind wheel-well box. MMO will be for the lube mainly, and brand cleaner appeared to indicate significant gas improvements. The lube was what was missing from the acetone, but you are right. As long as China makes our parts, we never know what we are getting: never.

I want my 20% minimum mileage improvement again (what we lost with ethanol gas law), even if I have to slow down. Combining MMO and one other ingredient will hopefully do it. But acetone was an incredible experience. Its so incredible, the auto and oil industry should conform to using it, if they were not all about money only. Thank goodness for MMO and Walmart! But conformed uniformed formulas will be better, and safer for me too.

What kind of % mileage improvements do other people experience with MMO alone?

I have a 1998 Ford Ranger that has had some paculiar starting problems, which I eventually narrowed down to some type of depostis forming on the injectors after shutting it off for awhile. If you started it up within one hour all was fine, after about two hours it would not fire, but if you cranked on it until the battery was near dead it would finally sputter to life on three of its six cylinders. After 5 minutes it would run normally. I spent a lot of money replacing sensors, plugs, coils, etc. to no avail.

One day while at PepBoys a bottle of Berryman’s B-12 Chemtool caught my eye. I had used it before with good results. Well, after that all the problems went away. Until I tried going without it, then the problem would come right back within two tanks. Now Berryman’s has a lot of nasty stuff in it, Methanol, MEK, and of course Acetone. I have been using this on a regular, every tank basis now for over 5 years with no detrimental affects. So I am not sure acetone hurts anything, but it has always been in the back of my mind that it might one day.

So one day I poured 15 ounces of MMO in the tank after a fill-up, and no Berryman’s. Its been four fill-ups now and the old problem has not returned. I am glad to be able to retire the use of Berryman’s, for now. Hopefully the symptoms don’t return, then the four cans of B-12 on my shelf can just sit there and gather dust. I have used MMO in my motorcycles regularly for many years, but only occasionally in my 4-wheelers. I now use it regularly in the cagers as well. ;-}

5 years? Wow, I wouldn’t worry about it, but would still add MMO. If it was acetone predominantly, you would have gotten 20% minimum better mileage and your performance would fell either like a mild turbo or you lost about 1500 lbs off your chassis weight.

I miss my mild turbo performance :-(

But my MMO and injector cleaner (Wally world store brand, Shell I think) at 2 oz/2 oz, gave me almost 18/gal (20% better mileage for me). But the performance is nowhere near what the acetone was.

I still think acetone and MMO would be excellent together. The Dakota has a fuel pump of several different plastic types (Carter is what replaced and oem on mine) and also has a black plastic tank. So there was reasonable suspicion. At least now, I can better try safer alternatives with MMO on my side for reliability. At 200K miles, that is always a concern.

Once I get my motorcycle running for backup, i won’t have to many worries on the road.