[DML] Re: Acetone and toluene in fuel
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[DML] Re: Acetone and toluene in fuel

I'm gonna have to chime in here on Toluene. It's the main ingredient in Berryman's B12 Chemtool.


This stuff works really well at cleaning parts. If you use it either as a Dip to clean parts, or use it to clean the crankcase of an old, gunked-up, neglected engine, it's amazing, and for those purposes I cannot say enough good things about it. However, I would not use this stuff in a fuel system.

Toluene is a nasty, harsh chemical that disolves rubber, silicone, and lots of other things aside from just gasoline varnish. So, what did Toluene do for me, or rather *to* me on a DeLorean with a brand-new fuel system that was less than 4 years old?

1. In the DeLorean it began breaking down the rubber boot that the fuel pump sits in. It was intact, but would start to gel around your fingers as you pushed on it, and little chunks began separating from it.

2. The Primary Pressure Regulator O-Rings cracked and ripped apart. This led to not only a nice "Hot-Start" issue, but threw my Fuel Mixture off.

3. It gave my car a stroke. With crap breaking off the running through the fuel system, injector #5 clogged up and kept me from running properly, from passing smog, and leading to more repairs.

4. It also gave a 1995 Dodge Dakota I used to own a stroke as well! Truck ran flawlessly. Decided to add Chemtool to it when I filled the gas tank as a preventative measure. Drove about a half-mile home and parked it. Next morning I started the truck, drove 15 feet, and the fuel pump locked up.

Now, you *might* not have all of these same symptoms in modern cars, it's true. Modern vehicle fuel injection systems are designed to be more resistant to harsh chemicals given the common use of ethanol alcohol in today's fuel blends, versus the fuels of yesterday that did not have them. Especially if you're dealing with a vehicle that's E-85 compatible and has the more resilient fuel system components.

If you really want a safe way to maintain/clean your fuel injection system, your best bet is Techron.


For a daily driver, add the stuff in twice a year, and an additional bottle if you have any sort repairs on the car that can affect the fuel system, like filter replacement, bad coolant thermostat, etc. I honestly can't think of a single car I've added the stuff to where I didn't get quicker, smoother starting from the engine. But still, it's a tool to help maintain an already properly functioning system. To quote DML Moderators and many more over the years, "There is no such thing as a Mechanic in a Bottle."

vin 6585 "X"

--- In dmcnews@xxxxxxxxxxxxxxx, "christiankuest" <christiankuest@...> wrote:
> [Moderator's note - the usual "Do Not Try This At Home" warnings apply... please stay safe and consider the risks. I don't want to see a DML'er or anyone else maimed or killed by playing with extremely dangerous fuel additives.]
> TO: Twin Engine DMC-12  (2 engines...? send me a picture!!)
> I don't know what Toluene is.  I'll look that one up.


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